Lieutenant John H. Martinson Playground: NYC

Because the paths run up and down hills, riding a scooter here can be a fast thrill or a hazard depending on how much speed is picked up. Aside from the standard swings and monkey bars, the sports setups include handball walls and double-rim basketball courts. From Tuesday to Saturday, a staff member is on hand to distribute toys. Clean restrooms with a diaper changing table add a layer of convenience.