The largest greenhouse in the world is home to over one million types of plants.

The largest and best-preserved rotunda in Prague.

A colossal statue of a woman hugging a modern building.

A Baroque mansion with ties to legendary magicians and alchemists.

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

A giant interactive periodic table with real samples of the elements.

A surreal statue honoring Prague's favorite literary son.

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

Monument to a suicide protesting the Soviet invasion.

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

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

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

Looming communist pillar with a Czech twist.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

This spooky statue sits outside a famous Prague theater.

A series of playful yellow penguins share a serious message about the environment.

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

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.

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

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

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.