Once the most densely populated place in the world, this island is now a ghost town.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

A swing to dangle you off the very edge.

Ruins of a German Castle on top of a towering stone pillar.

Northern Ireland's Brobdingnagian stepping stones.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

A submerged archeological park still holds the wonders of a Roman Sodom.

A taste of the macabre Tokyo's ritzy shopping district.

Famously misunderstood wonder of the ancient world

The world's largest collection of witchcraft regalia.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Notorious artist squat renovated into legal studios.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Hot springs monkey spa in the middle of Hell's Valley.

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.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

A magical place that lets you play in and explore the world of Studio Ghibli.

On Japan's Tashirojima Island, cats are king.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

An eerie, derelict amusement park in Berlin.

An abandoned saucer-shaped monument in the Bulgarian mountains.