The last municipal pneumatic post system in the world was in operation for over 100 years, and may run again.

A crucified and bearded female saint.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.

Looming communist pillar with a Czech twist.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

An existential riddle in the world's largest ancient castle.

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

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

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

This automated sculpture of two men peeing will spell out text messages with their micturition.

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

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

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

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

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

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

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

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

This artificial cave looks like something out of a fairytale.

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

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

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.