Europe's second largest ossuary wasn't discovered until 2001.

A mocking tribute to the past and modern leadership of Prague.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

Two monstrous faces loom over a village in Czechia.

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

Thirty creepy ghosts now inhabit this decaying 14th-century church.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

This artificial cave looks like something out of a fairytale.

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

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

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

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

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

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

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.

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

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

The first museum in the world devoted to sexual gadgetry.

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

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

Walk through Czech history in Prague's largest graveyard.