Grand Canyon Caverns & Inn

Cave in Western Arizona

Discovered in 1927 by a woodcutter who literally stumbled across (or into) them, these limestone caverns have fascinated visitors ever since. Tours range from the wheelchair-accessible Short Tour (adult/child $16/11, 30 minutes) to the Explorers Tour ($80, 2½ hours), and the new Wild Tour ($99, 2½ hours), which picks up where the Explorer finishes and delves into caverns only recently discovered. Note that children aren't permitted on the Explorers Tour and Wild Tour.