An opal mining town in the middle of Australia where people live, worship, and shop underground.

This eccentric cave dwelling is bizarre even by the standards of a subterranean town.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

A hyper-luxurious, 12,000- square foot home might be buried beneath Queens, still waiting to protect you from nuclear missiles.

An easy to overlook storefront hides some of the most authentic and regionally diverse Chinese food in New York.

Even Henry David Thoreau found this glacial pothole irresistible.

This is why we can't have nice things on the Incan Trail.

A small flooded ghost town with a few scattered structures remaining.

Crumbling ruins mark the site of a couple's grisly murder in the woods.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

The strange behavior of a tween led to allegations of witchcraft and a curse being placed on anybody within earshot.

An abandoned marine theme park has created a difficult experiment in dolphin rewilding.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

The mysterious remains of a martyred teenage saint are venerated inside a small country chapel.

A park full of outsider art, created by college students studying outsider art.

Gaze upon chocolate sculptures depicting everything from chariot races to Gaudí's famous church at this shrine to sweets.

Open-air museum with an elaborate sculpture garden, stretching for over 70,000 square-meters.

The house that took a plunge into the facade of a museum.

Numerous sculptures set along hiking trails symbolize and idealize the relationship between man and nature.

The site of one of history's most indelible and horrific tragedies.

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

An unexpected desert oasis in South America.

Science fiction's grandfather has a fittingly marvelous tomb.

A three-centuries-old crypt in the foothills of an old plantation.