A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The spectacular and eerie moss-covered grave site of 19th-century Belgian merchant.

Take a leisurely walk through the park to find the seven giant troll sculptures hidden throughout the park.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

This bike path traverses the treetops.

Nature is slowly overtaking this disused cemetery on the outskirts of Brussels.

This hospital fell into ruins after failing to act as the advocate for the mentally ill it was designed to be.

A giant scrap metal troll rests his hands on top of a dilapidated building covered in graffiti.

This haunting monument honors the victims of 9/11.

A cemetery that holds graves for the forgotten children of a burned orphanage.

This quaint New Jersey graveyard is an eternal resting place for thousands of beloved pets.

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.

One man's lifelong obsession with death.

Step inside Lucy, the world's largest "elephant."

The creek where a shark wreaked terror upon New Jersey, and served as the inspiration for "Jaws."

This Boy Scout retreat acted as "Friday the 13th"'s original Camp Crystal Lake.

In the woods of New Jersey lie the ruins of a munitions village abandoned after World War I and the remnants of a 1920s wooden racetrack.

A recently abandoned psych ward at the end of Sanatorium Road.

A storefront museum in Asbury Park honoring the Jersey Shore’s deep history of mystery—including the Jersey Devil.

Louise Bourgeois' 30-foot-tall steel spider sculpture.

Canada's subterranean Cold War museum has doubled as a movie set.