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

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

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

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

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.

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

An unexpected desert oasis in South America.

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

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.

Death rituals and sacrifice inside a Peruvian megalith.

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?

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.

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.

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

A pocket of jungle amidst urban expansion in Panama.

One of the newest mosques in a city filled with thousands.

This former Imperial summer home was the venue for a royal slap that once echoed 'round the world.

Ancient serpentine sacrifice holder that has stood the test of time.

This column celebrates Rome's victory over the Goths, and may be the oldest Roman monument in Istanbul.

A fountain standing as a testament to a doomed alliance.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.