This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

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

The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

Surreal riveted sea forts once protected the Kent shores from German attack.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

The world's longest known cave system.

A small museum filled with over 1,000 clocks, and one particular clock calibrated to run until the year 9999.

The beautiful baroque library of the Hapsburg empire.

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

A castle that was built stone by stone by an eccentric journalist.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

Venue for strange sideshow displays and musical acts.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

An abandoned stretch of highway, deteriorating next to the operational one.

Once the most densely populated place in the world, this island is now a ghost town.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This abandoned amusement park was built on a site with a dark history.

The abandoned Japanese amusement park once loomed as a dystopian Disneyland.

Odd outsider art installations surround a Gold Rush-era ghost town.

Remnants of a storybook amusement park hidden behind a strip mall.

World's largest collection of serial killer artwork and other macabre exhibits.

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