Sleep in a glass pod dangling off a cliff.

An unexpected desert oasis in South America.

A market for witches is hidden within a train station.

This scalding hot river was thought to be a myth until one geoscientist made it his quest to study the mystical waters.

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

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

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

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

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.

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

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

Walk through Czech history in Prague's largest graveyard.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

Two stunning 17th-century libraries and a cabinet of curiosities.

This outdoor gallery of graffiti-covered walls pays homage to the past, present, and possible future of street art.

Tucked in the back of this amazing antique store is an important piece of medical history.

You can still ride this 100-year-old work of art in Brooklyn's largest public park.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

These boots are made for selfies.

The 40-foot-tall votive candle is the largest of its kind.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.