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

A surreal statue honoring Prague's favorite literary son.

Macabre astrological automaton clock dating to the late 1400s.

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

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

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Created as a "model concentration camp" to hide Nazi atrocities from the international community, this former camp-ghetto now holds a museum and memorial honoring the lives lost within.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

At first glance, this area seems like just another city park, but the lush landscape hides a dark past.

Gliwice Radio Tower, likely the tallest wooden structure in the world.

One of the largest amphitheaters in Europe is a former Nazi German gathering place that still stands today.

A striking public sculpture representing the period of martial law in Communist Poland.

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.

The silly symbol for an underground protest group is now scattered around the city.

This dazzling wooden church was constructed as part of an elaborate peace project after the Thirty Years' War.

This centuries-old wooden wonder was built in less than a year and is one of Europe's largest timber-framed churches.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

The site of one of the largest prison escapes of World War II.

Beloved children's TV characters freckle the German city's streets.

This historic stone bridge has an entire neighborhood clinging to its sides.

Germany's longest suspension rope bridge.

A theme park made of glass, from the gleaming books on the shelves to the crystal fish in the mirror lake.

A bright and wacky exhibit answers every question you may have had about human excrement, flatulence, and more.