This ancient oak tree plays matchmaker for singles willing to branch out from the usual dating scene.

This high-Andean reserve protects the graceful vicuña that was nearly hunted to extinction for its precious wool.

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

An Inca spa, military outpost or maybe… both?

Peru's (not so) mysterious carved stones.

Mystic Incan rock piles three miles above sea level.

Visiting dignitaries and Hollywood stars once stayed at this 1920s hotel, alongside ghosts that are said to haunt its corridors.

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

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

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

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

One of the world's tallest waterfalls wasn't revealed to the world at large until 2006.

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

An unexpected desert oasis in South America.

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.

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

A remarkable geological formation resembling a forest made of stone.

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.

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 giant Christ took first place in South America's religious arms race.