Uninhabited islet in the Caribbean is the sanctuary of giant lizards.

Thousands of Haitians travel to the waterfalls to ask the Virgin Mary of Mount Carmel and her voodoo counterpart Erzulie for healing in a yearly pilgrimage.

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

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

The world's brightest bioluminescent bay.

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

This historic hiding place, often used by people escaping slavery, is a testament to a heroic struggle for freedom.

A safe place for the wild donkeys of a hot vacation destination.

Enchanting cave with a river crashing through the roof.

Sloth rehabilitation center in the jungle of Costa Rica.

Dine inside a giant caterpillar at this community-run eatery.

These Honduran caves earned their magical nickname thanks to reflective bone deposits.

Known as one of the most famous parks in Honduras.

Volcanically heated hot springs.

These roaring primates were considered a divine creature in the cosmology of the Maya.

Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Two waterfalls flow down the cliff faces decorated with rare natural basalt columns.

One man's personal collection of more than 2,000 creepy-crawlies from around the world.

A unique walk through hundreds of cactus plants, including some that stretch over 8 feet tall.

The spectacular subterranean collection includes dazzling minerals, including a piece of "kryptonite."

Inside this mountain lies several kilometers of breathtaking caves.

A gargantuan crystal kingdom.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.