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

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

On this tiny spot of land in the middle of Lake Titicaca the only ones who do the knitting are the men.

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

This 16th-century monastery was founded to cloister the daughters of wealthy local families.

An unexpected desert oasis in South America.

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.

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

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

The sophisticated hydraulic system of the Nazca civilization.

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

A Christian monastery stands on what was once a holy Incan temple.

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

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

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

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

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

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.

Artistic tombs, monuments, and a beautiful "Hall of Fame" lurk inside this cemetery.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.