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

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

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

A colorful Peruvian city of the dead.

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

Extraordinary rock formations in open Peruvian fields.

Death rituals and sacrifice inside a Peruvian megalith.

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

With nearly double the depth of the Grand Canyon, this Peruvian canyon is one of the deepest in the world.

Lima’s Museum of Anthropology is lined with thousands of elongated human craniums.

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.

Plundered and left asunder by grave robbers, this ancient necropolis has been painstakingly pieced back together.

A remarkable geological formation resembling a forest made of stone.

A market for witches is hidden within a train station.

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.

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

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

This devil-dancing ceremony now celebrates a miraculous image of the Virgin Mary that appeared to a modern-day Robin Hood in a mineshaft.

Thousands of fossilized footprints speckle this Bolivian national park.