A neo-Gothic castle in the Argentinian countryside.

In the most arid desert on the planet, the world's leading telescope allows astronomers to see more than has ever been seen before.

One of Chile's most active volcanoes is riddled with beautiful caves.

A toxic lake near a volcanic caldera that is home to flamingos and other life.

The remains of what was the most important religious complex in coastal Peru for over a millennium.

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

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

Mystic Incan rock piles three miles above sea level.

Pre-Incan aqueduct amidst a stone forest in Peru.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

These giant mummies are set ominously into a Peruvian cliffside and topped with real human skulls.

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

An Archaeological Wonder of Peru, and the largest stone ruin site in the New World.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

A mysterious pre-Incan ruin believed to have miraculous healing powers.

Death rituals and sacrifice inside a Peruvian megalith.

Extraordinary rock formations in open Peruvian fields.

White llama terraces dazzle in Peru's "other Machu Picchu."

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

The Uros people live on floating reed islands in lake Titicaca.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

A remarkable geological formation resembling a forest made of stone.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.