This huge pile of volcanic boulders hides a stunning network of secret grottoes.

This small primate research island is teeming with playing, fighting wild monkeys.

Renowned restaurant tucked in a cave once occupied by buccaneers.

A remarkable range of flora and fauna are represented in this Dominican nature preserve.

This trio of Dominican cave lakes comprise a colorful biosphere of natural life.

Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

The world's brightest bioluminescent bay.

Manatees congregate around a power plant's discharge canal where the water is especially warm.

The history of the traveling carnival is remembered by this sprawling collection of vintage wagons, games, and rides.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

A piece of outsider public art accompanied by a strange urban legend.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.