The world's first and only museum dedicated to dachshunds.

Shimmering sea-colored mosaics and Jesus statues cover this opulent building.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

Ride a dragon train into a world of dwarves.

An abandoned, deteriorating tuberculosis hospital from the turn of the 20th century.

These miniature works of art are hiding in plain sight on buildings around the city.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

An Orwellian sculpture with eyeball cameras watches passersby.

Microscopic scenes; some call it novelty, some call it art.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

This artificial cave looks like something out of a fairytale.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

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

The first museum in the world devoted to sexual gadgetry.

Walk through Czech history in Prague's largest graveyard.

The hidden lair of an alchemist rediscovered in a 2002 flood.

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

Super-heavy Nazi architectural experiment.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.