Grave of the man allegedly responsible for a series of infamous murders in Boston in the 1960s.

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

A cave dug by a man directed by ghosts to find pirate treasure.

This funeral home had the honor, if that is the correct word, of hosting the funeral of the famous Sacco and Vanzetti.

The tomb of Increase Mather and his son Cotton, influential colonial ministers obsessed with the occult.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

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

A skeletal collection of former nautical mainstays.

The simple log cabin of a famed loner and naturalist stands preserved as a symbol of the ultimate DIY lifestyle.

These massive mitts are made of 30 tons of devotional bronze.

This vintage animatronics show is the Vegas version of a walk through the woods.

A piece of the iconic wall found an unlikely new home in a Vegas bathroom.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The world's most famous donkey lives in this pen.

A crumbling Beaux Arts monument to the Bay Area's age of rail.

Dive bar built out of the remains of a whaling ship.

A WWI fighter plane and turn-of-the-century penny candy shop are among the unexpected features of this Financial District building.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

Once the tallest building in the world and the site of "the highest dinner ever held in New York" this building now holds the most expensive penthouse in the city.

Tacoma’s 25-foot coffee pot music spot has served up over 80 years of concrete kitsch.

A (slightly) grownup take on the classic retro arcade.