The former home of the famed revolutionary Pancho Villa is now a museum in his honor.

This 80-year old mannequin is so lifelike it is believed to be an embalmed corpse.

Largest monument in Colombia depicts 14 lancers who drove back an army.

The centuries-old trees are draped with Spanish moss to make them look like wizened elders.

Located outside Medellín, this Colombian park focuses on conservation and sustainability.

This collection of ancient, mountaintop, underground tombs was once hidden by decades of bloodshed.

This empty Victorian manse on Staten Island is said to be haunted but is actually a real life crime scene.

One man's lifelong obsession with death.

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

Half-hidden by grassy slopes, this striking Spanish colonial fort is now a museum of underwater archaeology.

An architectural marvel that dates back to the zenith of Indian architecture.

The 16-foot sculpture of a hand looks out from his perch on top of an art gallery.

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

Three sinkholes filled with warm, crystal-clear water reached by a horse-driven cart on an old train track through the jungle.

Cave where bat-eating snakes hang down from the ceiling.

A massive underwater sinkhole made famous by Jacques Cousteau.

Found down a long dirt road, a sacred Mexican cenote and 18th-century hacienda remain hidden.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A reproduction of earth's many biomes.

This scrap yard doubles as a naive art gallery full of found art and farm animals.

In Tucson a giant metal snake helps pedestrians cross a busy highway.