An Inca spa, military outpost or maybe… both?

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

The large collection of pre-Columbian pottery might make you blush.

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

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

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

This Peruvian bone silo lined with hanging human skeletons and hundreds of skulls is topped with a remarkable Michelangelo replica.

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.

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

This unimaginably large pile of sand near Nazca is one of the tallest dunes in the world.

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

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

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

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

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

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

Ain't no party like a ghost town party.

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

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

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

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

Extraordinary rock formations in open Peruvian fields.

A backdoor to Machu Picchu that only the most foolhardy infiltrator would attempt to breach.