Space Time Playground
Lafayette Ave. bet. Bolton Ave. and Underhill Ave.
Directions via Google Maps
"The central concept in the theory of relativity replaces earlier concepts of space and time as separate absolute entities. In space-time, events in the universe are described in terms of a four-dimensional continuum in which each observer locates an event by three spacelike coordinates and a timelike coordinate. Time is not absolute but is relative to the observer."