Parties at The Little Gym Brooklyn Heights last 90 minutes and start with one hour of supervised play in the gym, which is equipped with balance beams, parallel bars, and an inflatable track.

Budding scientists ages 4-10 will love Carmelo the Science Fellow's mix of magic, humor and hands-on experimentation at Carmelo's Cosmic Cove science house parties.

The New York Transit Museum hosts birthday parties for kids aged 4 and up. The Museum, housed in a disused IND station, is a must for all New Yorkers.