Fly World Trampoline Park, Williamsport

It is not everyday that a child—or anyone, for that matter—can throw down a vicious slam dunk. But at Fly World Trampoline Park, it's a daily—nay, hourly—occurrence. As if the wall-to-wall trampolines weren't awesome enough, the 10,000 square-foot facility also hosts basketball and dodgeball courts where kids can live out their most imaginative sports fantasies. For grown-ups, twice weekly fitness classes on the trampolines make for high-intensity, low-impact routines that burn calories.