Ever dreamed of spending the night 220 feet underground? The underground cavern suite at this old Route 66 motel is surprisingly popular for an accommodation that costs $900 a night. Most of the inn’s rooms are far more traditional (and far more economical). Built on the site of the Grand Canyon Caverns, the Caverns Inn is not as modern as the nearby Hualapai Lodge, but rooms are comfortable and service is good. Horseback rides and guided jeep tours to the bottom of the Grand Canyon can be arranged, and there’s a general store with camping supplies and food.