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

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

Death rituals and sacrifice inside a Peruvian megalith.

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

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

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

Huge stone depressions which may have acted as an Incan agricultural experiment.

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.

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

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

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.

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

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

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

A tunnel with windows, so you don't miss out on the impressive views.

The fifth-longest natural arch in the world, and the longest outside China.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

A house carved into a rock in the 1940s.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

Here, at the “world’s longest art gallery,” you’ll find forty miles of ancient petroglyphs and pictographs.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.