This museum houses an imposing skeleton army comprised of creatures great and small.

A haunting collection of the vanished and disappearing natural world.

A museum of carnival attractions where you are invited to ride the rides.

France's most famous cemetery, with some of its most curious tombs.

Abandoned railway line circling the city of Paris.

Puppet theater and museum holding a collection of more than 300.

These 18th century gardens tell a rocky story of the son of Odysseus.

An intricate and amazing house built by architect Karl Junker.

"The most colorful grottoes of the world.

Living trees form the structure of an open-air palace.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

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

An eerie, derelict amusement park in Berlin.

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

An abandoned horror film set sits eerily along a highway through Hollywood's "door to the desert."

A 20th-century picture show in 3-D.

A program of Communist glamour in post-Stalin Poland is preserved in this colorful museum.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

This abandoned Slovenian military barracks has become a punky-political art squat.

A miniature train-ride through Slovenia's largest cave system.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.