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

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

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

A surreal statue honoring Prague's favorite literary son.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

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

Macabre astrological automaton clock dating to the late 1400s.

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

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

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

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

This spooky statue sits outside a famous Prague theater.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

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

Monument to a suicide protesting the Soviet invasion.

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

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.”

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

The Origin of On the Origin of Species.

Abstract dinosaur models in London.

The remains of Crystal Palace Great Exhibition of 1851.

In the U.K., a historic workhouse shines a light on the early, harsh treatment of the poor.

This English medieval castle is where King John died of dysentery.