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.

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

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.

A surreal statue honoring Prague's favorite literary son.

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

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

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.

Macabre astrological automaton clock dating to the late 1400s.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

The largest coin pyramid in the world is a carefully balanced stack of over 1,000,000 pieces.

While this monument tile is shrouded in mystery it also marks the end of the longest ever human chain.

Plaques celebrating Lithuanian writers freckle a wall of this picture-perfect path.

A 300-kilogram egg sculpture that embodied a neighborhood revival.

A miraculous three-handed portrait of a saint can be found inside this church.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

This micro-nation may be some sort of prank, but its constitution sure seems official.

Travelers who fall victim to this mermaid's charms are destined to stay in Užupis forever.

Only a fragment of this 15th-century Dance of Death survives today.

Spend your honeymoon where the Devil had his wedding.

The oldest continuously operating pharmacy in Europe.