Local legend has it that an old, decaying staircase outside this cemetery is haunted by dozens of ghosts.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

The decaying ruins of Wales' first asylum for the mentally ill.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

A Balinese resort, empty and trapped in time.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

An abandoned village that doubled as "The Hunger Games"' post-apocalyptic wasteland is up for grabs.

A Turkish ghost town abandoned in a population exchange with Greece.

Empty since 1989, now falling into ruin.

When German-Iraqi relations broke down, this embassy was vacated post haste.

Secret Manor, a house full of legends, the least of which is the haunting of long-deceased ladies of pleasure.

The secret city built by the Manhattan Project.

Better known as the "Body Farm," this unique research facility has been studying how human bodies break down since the 1980s.

All that's left of the quintessential "cabin in the woods."

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A cave's rare beauty held a cavernous secret hidden underground.

The scene of one of the darkest moments in American labor history has been left essentially untouched since the tragedy.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

These aggressively sustainable art homes look like something out of 1970's science fiction.

A multi-storied adobe complex has been inhabited for more than a thousand years.

A museum dedicated to the alleged Roswell Incident.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

The ghost town that ended up on Ebay.