Steel City Jump Park, Birmingham

When you're a kid, dunking is like driving—it's nearly impossible to do legally until you're 16. Unless you're at Steel City Jump Park, that is. In the indoor fun park's 14,000-square-foot facility filled with trampolines, anyone can dunk at the modified basketball court, and kids of all ages do. Between basketball feats folks swan dive into the foam pit, try their hand at bouncy dodgeball, and experiment with other airborne tricks, like reverse skydiving.