This hanging crocodile is thought to be the "dragon" that once plagued a Czech city.

A concrete plant shaped like four giant soldiers commemorates one of the most decisive battles of the Napoleonic Wars.

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

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

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

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

One of the famous Czech artist's lesser-known Prague installations appears to be a glowing fetus affixed to a drainpipe.

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

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

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

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

This charming wooden church was disassembled and moved not once but twice before settling in this Prague garden.

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

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

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

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

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

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

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

A surreal statue honoring Prague's favorite literary son.

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

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

An Orwellian sculpture with eyeball cameras watches passersby.

Walk through Czech history in Prague's largest graveyard.