Luray Caverns (Luray, VA)
Deep beneath the Shenandoah Valley lie underground rooms 10 stories high, shimmering pools of water, and much more! The highlight: the Great Stalacpipe Organ, a rock formation that plays eerie, enchanting music.
Carlsbad Caverns National Park (Carlsbad, NM)
Don’t miss the evening bat flight program that makes this park famous. You’ll see thousands of the world’s only winged mammal soar out of the caves at sunset! Call ahead for times; through October.
Sea Lion Caves (Florence, OR)
Hop in an elevator and ride down to the world’s largest sea cave, which is packed with endangered Steller sea lions in the fall. While there, you’ll also spot cormorants, gulls, and maybe even a passing whale!