The legendary building that needed ghostly approval before being built.

The fairy tale castle of the "fairy-tale king."

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

A snapshot of the city's fascinating voodoo culture.

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

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

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

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

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

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

An exquisite tunnel of cascading flowers.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

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.

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

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

Vikings and Evangelicals have both had a hand in this replica medieval church.