The legendary building that needed ghostly approval before being built.

Dramatic river bend surrounds a natural red-rocked pedestal.

A kaleidoscopic warehouse-maze of handmade neon signs.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A 140-year-old castle with underground caves hidden in San Francisco.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

A snapshot of the city's fascinating voodoo culture.

Dodge prohibitionists and slide through the telephone booth in Crif Dogs.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

A crumbling hospital from the 1850s on Roosevelt Island.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

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

Rippling sand dunes frozen in the Arizona rock.

On Japan's Tashirojima Island, cats are king.

A psychedelic labyrinth on the San Francisco bay.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

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

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

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