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

A formerly abandoned mental institute, now back in business.

An abandoned asylum incorporated into a college campus.

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

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

Four-story concrete hotel never opened to customers.

When methane gas started seeping up from the ground, they picked up and moved the entire town.

Once an unstoppable source of gold and silver, this town came to a grinding stop when the groundwater proved deadly.

A town whose main resource was blue asbestos... what could possibly go wrong?

It seems that the residents of of this megalopolis suddenly vanished, but they were never actually there.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

This tiny New Jersey village has lived many lives but seems determined to remain a ghost town.

This historic iron-working village is now a ghost town so immaculate that it looks as though it was recently built.

The final remnant of the Arkansas zinc industry is this historically protected ghost town.

This attraction was abandoned after the Chernobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A crumbling hospital from the 1850s on Roosevelt Island.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

A toxic ghost town sitting atop a massive coal fire.