This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

Whether it’s your first walk or your hundredth visit, High Line Greeters help you discover a new side of the High Line.

The High Line Field Station is a mobile information cart, staffed by High Line Greeters, a group of knowledgeable volunteers who answer your questions and provide information about the park’s history, design, landscape, and more. The Field Station is also stocked with free resources, like monthly bloom lists, seasonal High Line Art maps, and information about upcoming free events and activities for the whole family.

The High Line Field Station is open Thursdays, from 1:00 – 7:00 PM, and Fridays, Saturdays, and Sundays, from 11:00 AM – 7:00 PM, between Saturday, May 4 and Sunday, September 29. The High Line Field Station will be open on Memorial Day (Monday, May 27) from 1:00 – 7:00 PM.

Start time: 1:00 pm

End time: 7:00 pm

Contact phone: (212) 206-9922

Location: Chelsea Market Passage (in The High Line)

Curious as to how “Snappy” the turtle got her name? Want to watch the snake gobble up a mouse? Join one of our trained staff in learning more about the animals in the Audubon Center’s collection. Learn what it takes to care for these amazing creatures and even assist in an actual feeding. There will also be opportunities to get up close and personal with our box turtle.

Start time: 2:00 pm

End time: 2:30 pm

Contact phone: (718) 287-3400

Location: Audubon Center at the Boathouse (in Prospect Park)

So you think you are a Naturalist? Find out at the Audubon Center by making your own nature journal, learning how to use binoculars and field guides.

Start time: 2:00 pm

End time: 3:00 pm

Contact phone: (718) 287-3400

Location: Audubon Center at the Boathouse (in Prospect Park)

The ornamental and native plantings around Sherman Creek and Swindler Cove need constant care; from watering to weeding, planting to dead-heading there is always work to be done in these gardens. Help maintain the Sherman Creek Gardens and join our Garden Crew on Thursday evenings this spring through fall.

Start time: 4:00 pm

End time: 6:30 pm

Contact phone: (917) 291-6436

Location: Swindler Cove Park

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

Whether it’s your first walk or your hundredth visit, High Line Greeters help you discover a new side of the High Line.

The High Line Field Station is a mobile information cart, staffed by High Line Greeters, a group of knowledgeable volunteers who answer your questions and provide information about the park’s history, design, landscape, and more. The Field Station is also stocked with free resources, like monthly bloom lists, seasonal High Line Art maps, and information about upcoming free events and activities for the whole family.

The High Line Field Station is open Thursdays, from 1:00 – 7:00 PM, and Fridays, Saturdays, and Sundays, from 11:00 AM – 7:00 PM, between Saturday, May 4 and Sunday, September 29. The High Line Field Station will be open on Memorial Day (Monday, May 27) from 1:00 – 7:00 PM.

Start time: 11:00 am

End time: 7:00 pm

Contact phone: (212) 206-9922

Location: Chelsea Market Passage (in The High Line)

Curious as to how “Snappy” the turtle got her name? Want to watch the snake gobble up a mouse? Join one of our trained staff in learning more about the animals in the Audubon Center’s collection. Learn what it takes to care for these amazing creatures and even assist in an actual feeding. There will also be opportunities to get up close and personal with our box turtle.

Start time: 2:00 pm

End time: 2:30 pm

Contact phone: (718) 287-3400

Location: Audubon Center at the Boathouse (in Prospect Park)

So you think you are a Naturalist? Find out at the Audubon Center by making your own nature journal, learning how to use binoculars and field guides.

Start time: 2:00 pm

End time: 3:00 pm

Contact phone: (718) 287-3400

Location: Audubon Center at the Boathouse (in Prospect Park)

Start time: 8:00 am

End time: 9:30 am

Contact phone: (718) 430-1890

Location: Van Cortlandt Nature Center (in Van Cortlandt Park)

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Come out and lend a hand to help us rake, weed and do various gardening chores. Join us for coffee and doughnuts in the am. Bring a rake or use one of ours and have some fun. If you need community sevice hours come to the park to get your hours.

To volunteer in Westerleigh Park call (718) 442-0336.

Start time: 9:00 am

End time: 12:00 pm

Contact phone: (718) 442-0336

Location: Westerleigh Park

Join staff removing invasive plants and restoring trails.

All events are listed on our website below. To volunteer for any of our events you must be age 14 and up/under 14 with an adult. Gloves and Tools are provided. If you are interested in volunteering, please RSVP.

Start time: 9:00 am

End time: 1:00 pm

Contact phone: (718) 667-2165

Location: 200 Nevada Avenue (in High Rock Park)

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

See thousands of blooming trees, shrubs, bulbs, and perennials with the Garden staff. Tours are free and meet at the Vanderbilt Gate at 5th Ave. between 104th and 105th Streets. No reservations needed.

Start time: 11:00 am

End time: 12:30 pm

Contact phone:

Location: Conservatory Garden (in Central Park)

Riverside Park Conservancy and NYC Urban Parks Rangers connect you to the life living within the Hudson River. Fishing equipment provided, but bring enthusiasm, luck and a friend. Come for the fishing, stay for river-related activities including fishy arts & crafts.

Thank you to our 2013 Summer on the Hudson in West Harlem Piers Park sponsor Fairway Market.

Start time: 11:00 am

End time: 3:00 pm

Contact phone: 311

Location: West Harlem Piers Park

Whether it’s your first walk or your hundredth visit, High Line Greeters help you discover a new side of the High Line.

The High Line Field Station is a mobile information cart, staffed by High Line Greeters, a group of knowledgeable volunteers who answer your questions and provide information about the park’s history, design, landscape, and more. The Field Station is also stocked with free resources, like monthly bloom lists, seasonal High Line Art maps, and information about upcoming free events and activities for the whole family.

The High Line Field Station is open Thursdays, from 1:00 – 7:00 PM, and Fridays, Saturdays, and Sundays, from 11:00 AM – 7:00 PM, between Saturday, May 4 and Sunday, September 29. The High Line Field Station will be open on Memorial Day (Monday, May 27) from 1:00 – 7:00 PM.

Start time: 11:00 am

End time: 7:00 pm

Contact phone: (212) 206-9922

Location: Chelsea Market Passage (in The High Line)

On Nature Exploration Hikes we will discover the plants and animals that inhabit the urban forest.

Hiking programs feature intensity levels ranging from light (a leisurely stroll on mostly paved paths), moderate (longer, faster paced hikes on rugged terrain), to vigorous (long distance, with hills and rugged terrain). For all hiking programs we recommend wearing comfortable shoes or boots, and packing water and a light snack.

Start time: 11:00 am

End time:

Contact phone: (718) 548-0972

Location: East 233 Street and Baychester Avenue (in Seton Falls Park)

Mastering any new skill requires practice and patience. Fishing programs help develop these skills while connecting you with nature. Our experienced Rangers teach the ethics of fishing and the ecology of our waterways on every fishing program.

Start time: 11:00 am

End time:

Contact phone: (212) 352-1769

Location: Rose and Oak Avenues (in Kissena Park)

From Porcelainberry to Multiflora Rose and Oriental Bittersweet the Highbridge Forest Crew works to remove these invasive plants and others from the park and to care for recently planted native trees. The Forest Crew will learn basic invasive and native plant identification, proper removal techniques and an overview of NYRP’s approach to urban reforestation. Anyone interested in forest ecology, invasive plant removal and urban forests should attend and join the Forest Crew in their work every Saturday afternoon.

RSVP by e-mailing volunteer@nyrp.org

Start time: 12:00 pm

End time: 2:30 pm

Contact phone: (917) 291-6436

Location: Laurel Hill Terrace (in Highbridge Park)

Follow Prospect Park Audubon Center staff as they explore the wilds of Prospect Park. Look for the orange tent in the Nethermead.

Schedule:

• 12 p.m. Introduction to Bird Watching. Led by the Brooklyn Bird Club. (Saturdays Only).
• 1 p.m. Animal Encounter
• 2 p.m. Nature’s Helpers
• 3 p.m. Nature on the Go! – Pond Prowl
• 4 p.m. Discovery Tour

Start time: 12:00 pm

End time: 4:00 pm

Contact phone: (718) 287-3400

Location: The Nethermead (in Prospect Park)

The Sherman Creek Compost Site keeps nutrient-rich compostable materials from ending up in land-fills and transforms them into finished compost that can be used to amend poor soils and help new plantings. As part of the Compost Crew you will learn about New York Restoration Project’s Composting Program; how to create windrows with compost from the Inwood Green Market; and how to sift finished compost so that it can be used in our community gardens and parks.

Please RSVP by e-mailing volunteer@nyrp.org.

Start time: 1:30 pm

End time: 4:00 pm

Contact phone: (917) 291-6436

Location: Swindler Cove Park

Come check on our flax crop and try out the tools used to process flax fibers into linen cloth. Touch different pieces of linen cloth to compare the weaves and try on some linen reproduction clothes for a fun photo-op in our farm wagon.

Start time: 2:00 pm

End time: 4:00 pm

Contact phone: (718) 789-2822 x301

Location: Lefferts Historic House (in Prospect Park)

We camp to create lasting memories, connect to the natural world, and to bond with our families. Camping affords us the opportunity to unplug from the diversions of everyday life and to laugh and play with our families. The Urban Park Rangers celebrate the tradition of camping throughout the Spring and Summer and we look forward to welcoming your family.

Participants are chosen by lottery. To enter your name in the lottery visit our website below on Wednesday, June 19.

Start time: 6:00 pm

End time:

Contact phone: (718) 967-3542

Location: Blue Heron Nature Center (in Blue Heron Park)

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 1:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

Help prep the park for the Summer by assisting the Fort Tryon Park Trust Friends Committee in park clean up, painting and planting. Need volunteer hours for school or work? Fort Tryon Park welcomes you!

Sign in at the Friends Committee table at the Margaret Corbin Circle entrance to the Heather Garden

Start time: 10:00 am

End time: 2:00 pm

Contact phone:

Location: Heather Garden (in Fort Tryon Park)

Whether it’s your first walk or your hundredth visit, High Line Greeters help you discover a new side of the High Line.

The High Line Field Station is a mobile information cart, staffed by High Line Greeters, a group of knowledgeable volunteers who answer your questions and provide information about the park’s history, design, landscape, and more. The Field Station is also stocked with free resources, like monthly bloom lists, seasonal High Line Art maps, and information about upcoming free events and activities for the whole family.

The High Line Field Station is open Thursdays, from 1:00 – 7:00 PM, and Fridays, Saturdays, and Sundays, from 11:00 AM – 7:00 PM, between Saturday, May 4 and Sunday, September 29. The High Line Field Station will be open on Memorial Day (Monday, May 27) from 1:00 – 7:00 PM.

Start time: 11:00 am

End time: 7:00 pm

Contact phone: (212) 206-9922

Location: Chelsea Market Passage (in The High Line)

We offer birding programs throughout the year and our Exploration series focuses on unique wildlife viewing opportunities during particular seasons. Birding programs are appropriate for all skill levels and beginners are welcome. To enhance your experience we encourage you to bring binoculars and field guides, or ask a Ranger to borrow a pair.

Start time: 11:00 am

End time:

Contact phone: (718) 967-3542

Location: High Rock Ranger Station (in High Rock Park)

Mastering any new skill requires practice and patience. Fishing programs help develop these skills while connecting you with nature. Our experienced Rangers teach the ethics of fishing and the ecology of our waterways on every fishing program.

Start time: 12:00 pm

End time:

Contact phone: (718) 548-0912

Location: Van Cortlandt Nature Center (in Van Cortlandt Park)

Follow Prospect Park Audubon Center staff as they explore the wilds of Prospect Park. Look for the orange tent in the Nethermead.

Schedule:

• 12 p.m. Introduction to Bird Watching. Led by the Brooklyn Bird Club. (Saturdays Only).
• 1 p.m. Animal Encounter
• 2 p.m. Nature’s Helpers
• 3 p.m. Nature on the Go! – Pond Prowl
• 4 p.m. Discovery Tour

Start time: 12:00 pm

End time: 4:00 pm

Contact phone: (718) 287-3400

Location: The Nethermead (in Prospect Park)

New York City is home to an amazing abundance of wildlife. From falcons and salamanders, to deer and seals, wildlife viewing opportunities exist year-round in all of our parks and beaches. Wildlife viewing is a perfect activity for any age. Today wildlife viewing is recognized as one of the nation’s fastest growing activities. Our Rangers will guide you to the best wildlife viewing spots in New York City.

Start time: 1:00 pm

End time:

Contact phone: (212) 628-2345

Location: Inwood Hill Park

Come check on our flax crop and try out the tools used to process flax fibers into linen cloth. Touch different pieces of linen cloth to compare the weaves and try on some linen reproduction clothes for a fun photo-op in our farm wagon.

Start time: 2:00 pm

End time: 4:00 pm

Contact phone: (718) 789-2822 x301

Location: Lefferts Historic House (in Prospect Park)

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

You don’t have to leave New York City to see the stars.

Gaze at the stars, planets, and Moon through the high-powered telescopes of the Amateur Astronomers Association of New York, and chat with the experts about the sights you see. Stargazing at the High Line takes place every Tuesday, beginning at dusk, between Tuesday, April 2 and Tuesday, October 29.

Start time: 6:30 pm

End time: 9:30 pm

Contact phone: (212) 206-9922

Location: 14th Street Passage (in The High Line)

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

Whether it’s your first walk or your hundredth visit, High Line Greeters help you discover a new side of the High Line.

The High Line Field Station is a mobile information cart, staffed by High Line Greeters, a group of knowledgeable volunteers who answer your questions and provide information about the park’s history, design, landscape, and more. The Field Station is also stocked with free resources, like monthly bloom lists, seasonal High Line Art maps, and information about upcoming free events and activities for the whole family.

The High Line Field Station is open Thursdays, from 1:00 – 7:00 PM, and Fridays, Saturdays, and Sundays, from 11:00 AM – 7:00 PM, between Saturday, May 4 and Sunday, September 29. The High Line Field Station will be open on Memorial Day (Monday, May 27) from 1:00 – 7:00 PM.

Start time: 1:00 pm

End time: 7:00 pm

Contact phone: (212) 206-9922

Location: Chelsea Market Passage (in The High Line)

The ornamental and native plantings around Sherman Creek and Swindler Cove need constant care; from watering to weeding, planting to dead-heading there is always work to be done in these gardens. Help maintain the Sherman Creek Gardens and join our Garden Crew on Thursday evenings this spring through fall.

Start time: 4:00 pm

End time: 6:30 pm

Contact phone: (917) 291-6436

Location: Swindler Cove Park

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

Whether it’s your first walk or your hundredth visit, High Line Greeters help you discover a new side of the High Line.

The High Line Field Station is a mobile information cart, staffed by High Line Greeters, a group of knowledgeable volunteers who answer your questions and provide information about the park’s history, design, landscape, and more. The Field Station is also stocked with free resources, like monthly bloom lists, seasonal High Line Art maps, and information about upcoming free events and activities for the whole family.

The High Line Field Station is open Thursdays, from 1:00 – 7:00 PM, and Fridays, Saturdays, and Sundays, from 11:00 AM – 7:00 PM, between Saturday, May 4 and Sunday, September 29. The High Line Field Station will be open on Memorial Day (Monday, May 27) from 1:00 – 7:00 PM.

Start time: 11:00 am

End time: 7:00 pm

Contact phone: (212) 206-9922

Location: Chelsea Market Passage (in The High Line)

Enjoy the quiet early morning hours and discover the birds, butterflies, and other wildlife that call the High Line home. During this walking tour with High Line Gardener and resident naturalist Maryanne Stubbs, you will discover a side of the park you’ve never seen before. Binoculars are recommended, but not required.

This High Line Program is open to visitors of all ages. Purchase tickets below.

Start time: 8:00 am

End time: 9:00 am

Contact phone: (212) 206-9922

Location: High Line (in The High Line)

Start time: 8:00 am

End time: 9:30 am

Contact phone: (718) 430-1890

Location: Van Cortlandt Nature Center (in Van Cortlandt Park)

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Come out and lend a hand to help us rake, weed and do various gardening chores. Join us for coffee and doughnuts in the am. Bring a rake or use one of ours and have some fun. If you need community sevice hours come to the park to get your hours.

To volunteer in Westerleigh Park call (718) 442-0336.

Start time: 9:00 am

End time: 12:00 pm

Contact phone: (718) 442-0336

Location: Westerleigh Park

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

See thousands of blooming trees, shrubs, bulbs, and perennials with the Garden staff. Tours are free and meet at the Vanderbilt Gate at 5th Ave. between 104th and 105th Streets. No reservations needed.

Start time: 11:00 am

End time: 12:30 pm

Contact phone:

Location: Conservatory Garden (in Central Park)

Whether it’s your first walk or your hundredth visit, High Line Greeters help you discover a new side of the High Line.

The High Line Field Station is a mobile information cart, staffed by High Line Greeters, a group of knowledgeable volunteers who answer your questions and provide information about the park’s history, design, landscape, and more. The Field Station is also stocked with free resources, like monthly bloom lists, seasonal High Line Art maps, and information about upcoming free events and activities for the whole family.

The High Line Field Station is open Thursdays, from 1:00 – 7:00 PM, and Fridays, Saturdays, and Sundays, from 11:00 AM – 7:00 PM, between Saturday, May 4 and Sunday, September 29. The High Line Field Station will be open on Memorial Day (Monday, May 27) from 1:00 – 7:00 PM.

Start time: 11:00 am

End time: 7:00 pm

Contact phone: (212) 206-9922

Location: Chelsea Market Passage (in The High Line)

Very van Gogh: Study the works of famed Post-Impressionist Vincent van Gogh, and then turn your creative juices loose. Experiment with oil pastels and discover the elements of his unique style and technique as we create vibrantlty expressive contoured forms.

Start time: 11:00 am

End time: 1:00 pm

Contact phone: (718) 351-3450

Location: Greenbelt Nature Center (in Blood Root Valley)

From Porcelainberry to Multiflora Rose and Oriental Bittersweet the Highbridge Forest Crew works to remove these invasive plants and others from the park and to care for recently planted native trees. The Forest Crew will learn basic invasive and native plant identification, proper removal techniques and an overview of NYRP’s approach to urban reforestation. Anyone interested in forest ecology, invasive plant removal and urban forests should attend and join the Forest Crew in their work every Saturday afternoon.

RSVP by e-mailing volunteer@nyrp.org

Start time: 12:00 pm

End time: 2:30 pm

Contact phone: (917) 291-6436

Location: Laurel Hill Terrace (in Highbridge Park)

The Sherman Creek Compost Site keeps nutrient-rich compostable materials from ending up in land-fills and transforms them into finished compost that can be used to amend poor soils and help new plantings. As part of the Compost Crew you will learn about New York Restoration Project’s Composting Program; how to create windrows with compost from the Inwood Green Market; and how to sift finished compost so that it can be used in our community gardens and parks.

Please RSVP by e-mailing volunteer@nyrp.org.

Start time: 1:30 pm

End time: 4:00 pm

Contact phone: (917) 291-6436

Location: Swindler Cove Park

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 1:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

Whether it’s your first walk or your hundredth visit, High Line Greeters help you discover a new side of the High Line.

The High Line Field Station is a mobile information cart, staffed by High Line Greeters, a group of knowledgeable volunteers who answer your questions and provide information about the park’s history, design, landscape, and more. The Field Station is also stocked with free resources, like monthly bloom lists, seasonal High Line Art maps, and information about upcoming free events and activities for the whole family.

The High Line Field Station is open Thursdays, from 1:00 – 7:00 PM, and Fridays, Saturdays, and Sundays, from 11:00 AM – 7:00 PM, between Saturday, May 4 and Sunday, September 29. The High Line Field Station will be open on Memorial Day (Monday, May 27) from 1:00 – 7:00 PM.

Start time: 11:00 am

End time: 7:00 pm

Contact phone: (212) 206-9922

Location: Chelsea Market Passage (in The High Line)

Take a tour of the "Park for All Seasons." Take a walking tour of the Heather and Alpine Gardens of Fort Tryon Park. Discover which plants are in bloom in each of the seasons, even in the dead of winter. Learn about the gardens' history, future, and secrets from a member of Fort Tryon's expert horticulture staff.

These tours are wheelchair accessible but persons with mobility issues may find them challenging because of the park's many steep paths.

Start time: 1:00 pm

End time: 2:00 pm

Contact phone:

Location: Heather Garden (in Fort Tryon Park)

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

The HSBC Children’s Garden at Queens Botanical Garden offers children in our diverse metropolitan area a rare opportunity to learn about science and nature through practical, hands-on experiences in an outdoor environment.

When summer arrives, the fun and learning heat up, as children make salads from their spring vegetable plantings, bake cookies in a solar oven, learn about climate and environment, raise and release butterflies, plant delicious summer vegetables, conduct scavenger hunts, build planters and terrariums and lots more. Ages 5 through 12.

There are two sessions:

• Summer I: July 8-August 21, Mondays & Wednesdays
• Summer II: July 9-August 22, Tuesdays & Thursdays

Or you can create your own schedule. Contact us about other flexible options. You may call or email education@queensbotanical.org

Start time: 9:00 am

End time: 4:00 pm

Contact phone: (718) 886-3800 ext. 237

Location: Queens Botanical Garden

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

The HSBC Children’s Garden at Queens Botanical Garden offers children in our diverse metropolitan area a rare opportunity to learn about science and nature through practical, hands-on experiences in an outdoor environment.

When summer arrives, the fun and learning heat up, as children make salads from their spring vegetable plantings, bake cookies in a solar oven, learn about climate and environment, raise and release butterflies, plant delicious summer vegetables, conduct scavenger hunts, build planters and terrariums and lots more. Ages 5 through 12.

There are two sessions:

• Summer I: July 8-August 21, Mondays & Wednesdays
• Summer II: July 9-August 22, Tuesdays & Thursdays

Or you can create your own schedule. Contact us about other flexible options. You may call or email education@queensbotanical.org

Start time: 9:00 am

End time: 4:00 pm

Contact phone: (718) 886-3800 ext. 237

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

You don’t have to leave New York City to see the stars.

Gaze at the stars, planets, and Moon through the high-powered telescopes of the Amateur Astronomers Association of New York, and chat with the experts about the sights you see. Stargazing at the High Line takes place every Tuesday, beginning at dusk, between Tuesday, April 2 and Tuesday, October 29.

Start time: 6:30 pm

End time: 9:30 pm

Contact phone: (212) 206-9922

Location: 14th Street Passage (in The High Line)

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

The HSBC Children’s Garden at Queens Botanical Garden offers children in our diverse metropolitan area a rare opportunity to learn about science and nature through practical, hands-on experiences in an outdoor environment.

When summer arrives, the fun and learning heat up, as children make salads from their spring vegetable plantings, bake cookies in a solar oven, learn about climate and environment, raise and release butterflies, plant delicious summer vegetables, conduct scavenger hunts, build planters and terrariums and lots more. Ages 5 through 12.

There are two sessions:

• Summer I: July 8-August 21, Mondays & Wednesdays
• Summer II: July 9-August 22, Tuesdays & Thursdays

Or you can create your own schedule. Contact us about other flexible options. You may call or email education@queensbotanical.org

Start time: 9:00 am

End time: 4:00 pm

Contact phone: (718) 886-3800 ext. 237

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

The HSBC Children’s Garden at Queens Botanical Garden offers children in our diverse metropolitan area a rare opportunity to learn about science and nature through practical, hands-on experiences in an outdoor environment.

When summer arrives, the fun and learning heat up, as children make salads from their spring vegetable plantings, bake cookies in a solar oven, learn about climate and environment, raise and release butterflies, plant delicious summer vegetables, conduct scavenger hunts, build planters and terrariums and lots more. Ages 5 through 12.

There are two sessions:

• Summer I: July 8-August 21, Mondays & Wednesdays
• Summer II: July 9-August 22, Tuesdays & Thursdays

Or you can create your own schedule. Contact us about other flexible options. You may call or email education@queensbotanical.org

Start time: 9:00 am

End time: 4:00 pm

Contact phone: (718) 886-3800 ext. 237

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

Whether it’s your first walk or your hundredth visit, High Line Greeters help you discover a new side of the High Line.

The High Line Field Station is a mobile information cart, staffed by High Line Greeters, a group of knowledgeable volunteers who answer your questions and provide information about the park’s history, design, landscape, and more. The Field Station is also stocked with free resources, like monthly bloom lists, seasonal High Line Art maps, and information about upcoming free events and activities for the whole family.

The High Line Field Station is open Thursdays, from 1:00 – 7:00 PM, and Fridays, Saturdays, and Sundays, from 11:00 AM – 7:00 PM, between Saturday, May 4 and Sunday, September 29. The High Line Field Station will be open on Memorial Day (Monday, May 27) from 1:00 – 7:00 PM.

Start time: 1:00 pm

End time: 7:00 pm

Contact phone: (212) 206-9922

Location: Chelsea Market Passage (in The High Line)

In keeping with the vision of Dutch planting designer Piet Oudolf, the High Line’s landscape undergoes dramatic transitions through the four seasons, with new foliage and blooms on view each month. Take a walking tour with a High Line Gardener to get an insider’s look at the park’s unique horticultural design, and learn what it takes to maintain a garden elevated above the streets of New York City.

This High Line Program is open to visitors of all ages. Purchase tickets below.

Start time: 2:00 pm

End time: 3:00 pm

Contact phone: (212) 206-9922

Location: High Line (in The High Line)

The ornamental and native plantings around Sherman Creek and Swindler Cove need constant care; from watering to weeding, planting to dead-heading there is always work to be done in these gardens. Help maintain the Sherman Creek Gardens and join our Garden Crew on Thursday evenings this spring through fall.

Start time: 4:00 pm

End time: 6:30 pm

Contact phone: (917) 291-6436

Location: Swindler Cove Park

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

Whether it’s your first walk or your hundredth visit, High Line Greeters help you discover a new side of the High Line.

The High Line Field Station is a mobile information cart, staffed by High Line Greeters, a group of knowledgeable volunteers who answer your questions and provide information about the park’s history, design, landscape, and more. The Field Station is also stocked with free resources, like monthly bloom lists, seasonal High Line Art maps, and information about upcoming free events and activities for the whole family.

The High Line Field Station is open Thursdays, from 1:00 – 7:00 PM, and Fridays, Saturdays, and Sundays, from 11:00 AM – 7:00 PM, between Saturday, May 4 and Sunday, September 29. The High Line Field Station will be open on Memorial Day (Monday, May 27) from 1:00 – 7:00 PM.

Start time: 11:00 am

End time: 7:00 pm

Contact phone: (212) 206-9922

Location: Chelsea Market Passage (in The High Line)

Spend an evening weeding the meadow and restoring the trails in Sherman Creek while learning about the native wildflowers in the Sherman Creek Meadow.

Start time: 4:00 pm

End time: 6:30 pm

Contact phone: (917) 291-6436

Location: Sherman Creek Park (in Sherman Creek)

Start time: 8:00 am

End time: 9:30 am

Contact phone: (718) 430-1890

Location: Van Cortlandt Nature Center (in Van Cortlandt Park)

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Come out and lend a hand to help us rake, weed and do various gardening chores. Join us for coffee and doughnuts in the am. Bring a rake or use one of ours and have some fun. If you need community sevice hours come to the park to get your hours.

To volunteer in Westerleigh Park call (718) 442-0336.

Start time: 9:00 am

End time: 12:00 pm

Contact phone: (718) 442-0336

Location: Westerleigh Park

Join staff removing invasive plants and restoring trails.

All events are listed on our website below. To volunteer for any of our events you must be age 14 and up/under 14 with an adult. Gloves and Tools are provided. If you are interested in volunteering, please RSVP.

Start time: 9:00 am

End time: 1:00 pm

Contact phone: (718) 667-2165 x 311

Location: 200 Nevada Avenue (in High Rock Park)

Volunteer with Natural Areas Volunteers (NAV) at Clove Lakes Park to care for newly planted trees. This work will help restore the forest of Clove Lakes Park. Volunteers will be trained in tree care, invasive weed identification and removal techniques. Come dressed in sturdy boots or shoes, long pants and clothing that can get dirty. Space is limited. Registration is required for this event at the link below.

Start time: 9:00 am

End time: 1:00 pm

Contact phone:

Location: Slosson Avenue & Drake Avenue (in Clove Lakes Park)

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 3:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

See thousands of blooming trees, shrubs, bulbs, and perennials with the Garden staff. Tours are free and meet at the Vanderbilt Gate at 5th Ave. between 104th and 105th Streets. No reservations needed.

Start time: 11:00 am

End time: 12:30 pm

Contact phone:

Location: Conservatory Garden (in Central Park)

Whether it’s your first walk or your hundredth visit, High Line Greeters help you discover a new side of the High Line.

The High Line Field Station is a mobile information cart, staffed by High Line Greeters, a group of knowledgeable volunteers who answer your questions and provide information about the park’s history, design, landscape, and more. The Field Station is also stocked with free resources, like monthly bloom lists, seasonal High Line Art maps, and information about upcoming free events and activities for the whole family.

The High Line Field Station is open Thursdays, from 1:00 – 7:00 PM, and Fridays, Saturdays, and Sundays, from 11:00 AM – 7:00 PM, between Saturday, May 4 and Sunday, September 29. The High Line Field Station will be open on Memorial Day (Monday, May 27) from 1:00 – 7:00 PM.

Start time: 11:00 am

End time: 7:00 pm

Contact phone: (212) 206-9922

Location: Chelsea Market Passage (in The High Line)

Very van Gogh: Study the works of famed Post-Impressionist Vincent van Gogh, and then turn your creative juices loose. Experiment with oil pastels and discover the elements of his unique style and technique as we create vibrantlty expressive contoured forms.

Start time: 11:00 am

End time: 1:00 pm

Contact phone: (718) 351-3450

Location: Greenbelt Nature Center (in Blood Root Valley)

From Porcelainberry to Multiflora Rose and Oriental Bittersweet the Highbridge Forest Crew works to remove these invasive plants and others from the park and to care for recently planted native trees. The Forest Crew will learn basic invasive and native plant identification, proper removal techniques and an overview of NYRP’s approach to urban reforestation. Anyone interested in forest ecology, invasive plant removal and urban forests should attend and join the Forest Crew in their work every Saturday afternoon.

RSVP by e-mailing volunteer@nyrp.org

Start time: 12:00 pm

End time: 2:30 pm

Contact phone: (917) 291-6436

Location: Laurel Hill Terrace (in Highbridge Park)

(faux)H is a series of six hands-on workshops held at the Wyckoff farmhouse Museum, exploring traditional farm based skills: hand sewing, natural dying and preservation. Employing dye plants and crops grown on the Wyckoff farm, situated in the middle Brooklyn, (faux)H will be a collaborative experiment in the lost art of learning-by-doing. Join artist, Lisa Sikorski on a journey of learning about the slow process of making by hand and from the earth. Workshops are suitable for participants ages 13 and up.

Natural Dying: Did you know your garden is already growing a wealth of materials that you can use to beautify other things? Come learn how to take the otherwise inedible plants in your garden and dye various fibers. We will use plant materials grown specifically for dying as well as less commonly used dye plants. This workshop will be an exploration of the potential and uses of natural materials.

How to sign up: Participants may sign up for one or all workshops. For more information about the program or to register please email.

(faux)H Workshop Series:

• Hand Sewing & Embroidery: May 11 and June 8, 10am-12:30pm
• Natural Dying: July 13 and August 10, 12-3pm
• Preserving the Harvest: September 14 and October 5, 12-3pm

Start time: 12:00 pm

End time: 3:00 pm

Contact phone: (718) 629-5400

Location: Wyckoff Farmhouse Museum (in Fidler-Wyckoff House Park)

The Sherman Creek Compost Site keeps nutrient-rich compostable materials from ending up in land-fills and transforms them into finished compost that can be used to amend poor soils and help new plantings. As part of the Compost Crew you will learn about New York Restoration Project’s Composting Program; how to create windrows with compost from the Inwood Green Market; and how to sift finished compost so that it can be used in our community gardens and parks.

Please RSVP by e-mailing volunteer@nyrp.org.

Start time: 1:30 pm

End time: 4:00 pm

Contact phone: (917) 291-6436

Location: Swindler Cove Park

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

Grab a pole and relax on the Harlem Meer while you wait for a bite from one of the many species of fish that live in its diverse aquatic ecosystem! Poles available to borrow; must release fish after catching them. Free for families and individuals; groups larger than 5 must reserve at least 2 weeks in advance.

Start time: 10:00 am

End time: 1:00 pm

Contact phone: (212) 860-1370

Location: Charles A. Dana Discovery Center (in Central Park)

Whether it’s your first walk or your hundredth visit, High Line Greeters help you discover a new side of the High Line.

The High Line Field Station is a mobile information cart, staffed by High Line Greeters, a group of knowledgeable volunteers who answer your questions and provide information about the park’s history, design, landscape, and more. The Field Station is also stocked with free resources, like monthly bloom lists, seasonal High Line Art maps, and information about upcoming free events and activities for the whole family.

The High Line Field Station is open Thursdays, from 1:00 – 7:00 PM, and Fridays, Saturdays, and Sundays, from 11:00 AM – 7:00 PM, between Saturday, May 4 and Sunday, September 29. The High Line Field Station will be open on Memorial Day (Monday, May 27) from 1:00 – 7:00 PM.

Start time: 11:00 am

End time: 7:00 pm

Contact phone: (212) 206-9922

Location: Chelsea Market Passage (in The High Line)

This mixed media exhibit by artist Iandry Randriamandroso is created from discarded, crushed aluminum cans found on the streets, and cardboard and burlap from local grocery, along with wordless hand-made books about a fish and a crushed can. This exhibit illustrates how growth is disrupted by invasive species, and is on display in the Visitor&Administration Building Gallery. Free with Garden admission.

Start time: 8:00 am

End time: 6:00 pm

Contact phone: (718) 886-3800

Location: Queens Botanical Garden

The HSBC Children’s Garden at Queens Botanical Garden offers children in our diverse metropolitan area a rare opportunity to learn about science and nature through practical, hands-on experiences in an outdoor environment.

When summer arrives, the fun and learning heat up, as children make salads from their spring vegetable plantings, bake cookies in a solar oven, learn about climate and environment, raise and release butterflies, plant delicious summer vegetables, conduct scavenger hunts, build planters and terrariums and lots more. Ages 5 through 12.

There are two sessions:

• Summer I: July 8-August 21, Mondays & Wednesdays
• Summer II: July 9-August 22, Tuesdays & Thursdays

Or you can create your own schedule. Contact us about other flexible options. You may call or email education@queensbotanical.org

Start time: 9:00 am

End time: 4:00 pm

Contact phone: (718) 886-3800 ext. 237

Location: Queens Botanical Garden