Hippo Playground (Riverside Park)
✓ Last confirmed for the 2025 season
Where: Riverside Park at W 91st St, Manhattan, New York
When: typically open in warm months (check before visiting)
Hours: typically daylight hours
Cost: free
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An Upper West Side institution built around Bob Cassilly's climbable hippopotamus sculptures, with water sprays, a sandbox, swings and climbing structures. It doubles as a neighborhood hub, hosting an annual Halloween parade and spring fair.