One of the cleanest and most impressive indoor play spaces that I have seen in New York resides at Appleseeds, located off the Northwest side of Madison Square Park. Yes, the same park with the famous burger joint, Shake Shack. Our NYC Dads Group were spread out across the different areas of the play space. Appleseeds has an expansive playground including a deli (with play shopping carts and different soft-foam foods), an NYC taxi and apartment building, as well as a Lego area and magnet wall. There was a ton to keep my son busy, but he was fascinated with handing me the different alphabet letters to put up on the magnet wall. There is plenty to keep your kid busy, and the space allows you to see your child from almost any vantage point.