An abandoned Incan construction project left behind a mysterious "doorway."

After an epic flood washed away its enslavers, this city has been part ghost town, part cultural wildcard for the past three centuries.

A fascinating little museum all about the rich history of Peru’s famous plant.

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

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

Art school in the Amazon: Drugs, nature and sustainable agriculture.

One of the most remote lodges in the Amazon offers rare wildlife encounters and undisturbed views of the Peruvian rainforest.

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

Did Inca children also slide down these smooth rocky slopes above Cusco?

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

A jungle cave in Peru of unknown depths, otherworldly sounds, and strange nocturnal birds that navigate by echolocation.

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

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

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

The world's fifth tallest waterfall is a spectacular silver chute of water that cuts through the cloud forest in northern Peru.

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

Ain't no party like a ghost town party.

Death rituals and sacrifice inside a Peruvian megalith.

Sleep in a glass pod dangling off a cliff.

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

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

An unexpected desert oasis in South America.

One of the world's tallest waterfalls wasn't revealed to the world at large until 2006.

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.