Small church on top of a huge rock column.

These Stalin-era industrial 'death traps' hang lifeless above the city

Underground monastery and fortress.

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

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

Ain't no party like a ghost town party.

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

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

The world's fifth tallest waterfall is a spectacular silver chute of water that cuts through the cloud forest in northern Peru.

An unexpected desert oasis in South America.

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

Nazca pilgrimage site covering 370 acres is a popular stop for archeologists and looters.

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

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

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

Keshwa chaca, among the last handwoven Incan bridges, crosses Apurimac Canyon in Peru.

Made by river sediment, it is the largest alluvial fan in the world.

This Cold War–era underground city includes offices for Mao Zedong and Lin Biao.

Natives of this mud-brick desert village use an ancient irrigation system to grow sweet, seedless grapes.

The world’s tallest outdoor lift stretches along the stone pillars that inspired the floating mountains in the movie “Avatar.”

Sited in an Inner Mongolian desert are the remnants of an important trade stop along the Silk Road.

The largest radio telescope in the world searches for extraterrestrial life from the remote limestone peaks of southern China.

The highest monastery in the world operates a tiny guesthouse with doors open to all.

Two ancient Buddhist temples crown this dramatic rocky pinnacle.