An abandoned relic of the city's failed experiment with below ground transit.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

This amazingly preserved Gold Rush town is a historian's dream.

This abandoned prison castle has become an imposing gallery of graffiti art.

A Beaux-Arts triumph set to become Ford's innovation campus

See just what life was like in a 19th-century prospecting town.

Enchanting gardens surround a derelict mansion, all hidden in plain sight behind a stone wall.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

An incredible little museum of interior design full of artifacts collected from around the world.

A hotel and restaurant serving as the mecca of kitsch.

The location of Puerto Rico's first water bottling plant, thanks to a collaboration between Mother Nature and technology.

This wrecked ghost ship has been rusting on a Greek beach since the 1980s.

One of the few surviving examples of the first lock and dam system built on the Ohio River.

The ruins of a pre-Columbian fortress city so secure it held off the Spanish conquistadors for over 20 years.

You'll find the little birds tucked within the rocks of this Australian beach.

Imagine having a street run right through your home, or better yet, a historic bridge three stories high.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

This set of mysterious petroglyphs in the Peruvian jungle could shed light on centuries-old activities in the region.

After an epic flood washed away its enslavers, this city has been part ghost town, part cultural wildcard for the past three centuries.

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

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