A bus with a butt and biceps to put Olympic athletes to shame.

Bohemian paradise covered in majestic forests.

This former quarry is now a picturesque gorge that hides a sunken lake.

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

An Orwellian sculpture with eyeball cameras watches passersby.

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

What looks like a crashed Zeppelin is actually a bright, airy reading room perched atop a modern museum.

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

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

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

This doorless 20th-century elevator doesn't stop or slow down.

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

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

This artificial cave looks like something out of a fairytale.

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.

Walk through Czech history in Prague's largest graveyard.

A Jenga-style cylindrical tower of books that appears to go on forever.

Locals say the stone that marks the spot where the gallows once stood can lead you astray.

This renaissance château was home to an infamous witch hunter who sent a hundred suspected witches to their deaths.

A former top secret nuclear fallout shelter now operates like a hotel stuck in the Cold War.

Underneath the city that invented pilsners are a series of historic tunnels that have been storing beer for centuries.

A saintly relic hidden in a Prague church basement.