High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

A jewel of the Mexico city skyline now slowly crumbles after surviving an earthquake.

A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

This micronation's flag honors its favorite drink, Kaffegöken, or "cuckoo-coffee."

This collection of unique liquids allows visitors to wander the waters of Iceland's glaciers.

Staves, storm-calling, and of course, necropants.

The world's 2nd or 3rd or 4th busiest seaplane base.

Once featuring over 60 miniature replicas of famous Chinese locations, the Splendid China theme park was completely abandoned and is now mostly rubble.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

Enchanting cave with a river crashing through the roof.

Former drug lord’s manor, now a theme park. Watch out for the hippos.

Cathedral carved out of salt, located a mile below the earth's surface.