A dangling church built over a Colombian gorge.

An explosion of natural color known as "the river that ran away from paradise."

The colonial city's social history is reflected in its fanciful door knockers.

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

A cozy bookstore and coffee shop in the heart of Cartagena's Old City.

The caldera of this mini-volcano has been turned into a naturally heated mud bath.

This well held a sacred source of water supposedly unleashed from the barren rocks by a wizard-like archbishop.

This set of mysterious petroglyphs in the Peruvian jungle could shed light on centuries-old activities in the region.

The sophisticated hydraulic system of the Nazca civilization.

An Inca spa, military outpost or maybe… both?

The depictions of slaughter are surprisingly detailed at this mysterious ancient site.

The shockingly unspoiled Peruvian tomb of the Lord of Sipan was once guarded by a footless warrior.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

Hundreds of mummies in a silent room, some with eerily pained expressions preserved on their faces.

A paradisical gorge with rapids, waterfalls, and wildlife whose raw beauty is the stuff of CGI movies.

This remarkably well-preserved Incan city managed to survive the conquistadores.

The mysterious "Candelabra of the Andes" could represent anything from a god's trident to a hallucinogenic plant.

This metal tower in the desert provides views of a handful of Nazca geoglyphs.

These delicate ruins need more tourists to keep them from fading away.

The highest tropical mountain range in the world is in Central Peru, home to a vast array of exotic and quirky plants and animals.

Now containing the bones of the actual conquistador, instead of someone else.

The world's largest clay lick, where parrots gather to snack.

This stone complex marks the urban center of a lost civilization.

Tucked behind the Institute of Neurological Science down a decrepit street resides the largest display of human brains in Latin America.