The oldest Jewish cemetery in Europe survived Hitler's Germany.

World's largest barrel containing an inn.

It's said the devil used this mushroom rock as a table for a late-night meal.

Before the electric telegraph, a chain of stone towers carried messages across France.

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

An ancient monastery, a locked room, and a mysterious book heist.

Today this former Nazi concentration camp stands as a poignant memorial to the victims of fascism, and a warning from history.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

This fascinating museum in an old water tower holds the world's largest collection of Vodou artifacts from western and central Africa.

This 14th century wine cellar is home to the oldest barrel-stored wine in the world.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

There has been an astronomical clock on this spot since the 14th century.

A thought-provoking outdoor art installation sits in the seat of German law.

The remains of three Luftwaffe launch pads designed for manned anti-aircraft missiles.

Albert Einstein's head sticks out of a snail shell stacked on a rocket in this truly bizarre monument to the scientist.

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

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

Looming communist pillar with a Czech twist.

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

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

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

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

A half-buried vehicle in Prague's is the latest iteration in a long-running piece by Czech artist David Černý.