On Japan's Tashirojima Island, cats are king.

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

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

The legendary building that needed ghostly approval before being built.

The sign at the garden gate reads: "These Plants Can Kill."

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

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Most-visited and most-photographed slot canyon in the American Southwest.

World's first "penitentiary," meant to be humane, drove men insane.

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

Dramatic river bend surrounds a natural red-rocked pedestal.

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.

Medicinal spa created with the discharge from a geothermal energy plant.

An eerie, derelict amusement park in Berlin.

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

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

A historic house left in "dramatic still life."

A tongue-in-cheek arcade where the games are based on everyday life.

A student driver's nightmare.

One part local history, 99 parts gruesome haunted house.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

A hands-off space for graffiti artists to hone and display their skills.