Caves

One of the largest, oldest, darkest, quietest motel rooms in the world.

A limestone wonderland of water and subterranean secrets.

Gorgeous cave resemble a winter wonderland.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

This cavernous swimming spot doubles as a home to the largest known colony of bats in Central Asia.

Enchanting cave with a river crashing through the roof.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

A cave network located at the southernmost tip of mainland Greece was once believed to be an entrance to Hades.

Sparkling, calcite-covered skeletons of children who may have been sacrificed to appease an angry god.

Largest cave system in Africa.

Limestone caves with spectacular showcase chambers.

A wonder of natural limestone formations etched by millions of years of natural interaction between rainfall and rock and air.

An ethereal glowing blue ocean cave in Croatia.

These azure waters were thought to lead to the Mayan Underworld.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

An odd little fishing town that is inundated by tourists looking to be locked up in a cage and surrounded by great white sharks, because why not?

The first tourist attraction to offer tours for interstellar tourists.

Ha Long Bay's "Cave of Surprises" houses a popular phallic rock formation.