Crystal Cave, Sequoia National Park, California. This marble cave in the Giant Forest region is between the Ash Mountain entrance of the park and Giant Forest. The cave is a constant 9 °C (48 °F), and only accessible by guided tour. Photographer unknown.
29 Surreal Places In America You Need To Visit Before You Die
Watkins Glen State Park, NY We all know Niagara Falls is a sight to see, but located south of Seneca Lake in the Finger Lakes region lies a lesser-known fantasy-like area called Rainbow Bridge and Falls.