An art world insider finds himself battling for his artistic home.

Figures of unknown origin carved into the surfaces of underground caves.

A village of art and exotic creations.

Natural mummies hidden in the crypt of a medieval French church.

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

A Gothic cathedral created from volcanic rocks.

"The most colorful grottoes of the world.

This German museum is devoted to all aspects of grave culture from headstones to coffins.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.

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

A former squatter's paradise outside Prague.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

Countless grotesque faces stare out from this eerie Prague art wall.

The first museum in the world devoted to sexual gadgetry.

Two stunning 17th-century libraries and a cabinet of curiosities.

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

Museum dedicated to the terror regimes of Hungary.