A seemingly endless landscape of pure salt stretches far across Bolivia.

Building this tragically pointless stone barrier cost the lives of the prisoners made to build it.

A turquoise lake within a volcanic crater.

Ecuador's largest Incan ruins show evidence of sophisticated irrigation and diplomacy among the ancient builders.

These mammoth-yet-narrow crevasses in the Earth are perfect for taking an otherworldly swim.

Massive volcano in the Andes is the farthest point from earth's center.

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

Mysterious "dots" seen from a satellite in southeast Peru.

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

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.

This small oxbow lake has rare giant river otters and some Seussian-sounding birds.

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

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

Ain't no party like a ghost town party.

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

Death rituals and sacrifice inside a Peruvian megalith.

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

Extraordinary rock formations in open Peruvian fields.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

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.

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

An unexpected desert oasis in South America.

A market for witches is hidden within a train station.