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This piece by artist Robert J. Cassilly, Jr. is an interactive play sculpture featuring 14 hippopotami, two of which function as a spray fountain. The fiberglass hippos are part of the spray fountain, and children are invited to play on and around the sculpture. The Playground Project, Inc., a non-profit group that maintains the playground, commissioned the sculptures as part of the 1993 renovation of Riverside Park’s 91st Street Playground, which was subsequently renamed Hippopotamus Playground. Cassilly has designed numerous other pieces of animal art, especially for the St. Louis Zoo, in the city in which he lives.
Hippopotamus Fountain Details
- Location: 91st Street Playground
- Sculptor: Robert J. Cassilly, Jr.
- Architect: Mark Morison
- Description: Fourteen figures (reduced scale), two of which are spray fountains
- Materials: Fiberglass reinforced polyester resin (silica gel coating); ears--vinyl ester resin with Kevlar fiber
- Dimensions: H: 3'4" W: 2'7" D: 9'
- Cast: ca. 1993
- Dedicated: April 25, 1993
- Fabricator: Robert J. Cassilly, Jr.
- Donor: The Playground Project, Inc.
Directions to Riverside Park
Know Before You Go
Riverside Skate Park
Riverside Skate Park is closed to reconstruct the existing skate park with new skate elements, fencing, benches, picnic tables, and landscaping. Please visit the Capital Project Tracker page for updates on the project.
Anticipated Completion: Spring 2020
- RIVERSIDE PARK TO RECEIVE $11.5 MILLION IN MAYORAL FUNDING TO ADDRESS 1930s ERA DRAINAGE SYSTEMS
- NYC PARKS’ CITYWIDE MONUMENTS CONSERVATION PROGRAM KICKS OFF ITS 21st YEAR
- NYC Parks To Temporarily Close Riverside Park South Bike Path—59-70 Streets—Due To Planned Construction