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

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

Monument to a suicide protesting the Soviet invasion.

This spooky statue sits outside a famous Prague theater.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

This Czech church doubles as something of a permanent fashion exhibition for a statue of the Infant Jesus.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

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

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

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

Macabre astrological automaton clock dating to the late 1400s.

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

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