This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

An old asylum graveyard that's been abandoned for half a century attracts those seeking a dark thrill.

The medieval "Bearded Man" relief still serves as a clever flood warning marker.

A crucified and bearded female saint.

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.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

Once home to some 250,000 volumes and priceless art artifacts, this Polish estate was a target of bombing during World War II.

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

A hidden art gallery in an abandoned Warsaw fort.

Located in an old church, this brewery produces a different kind of holy water.

The internet as provided by a James Bond villain.

A small museum contains one of the largest collections of ethnic and traditional headgear in the world.

These crumbling Latvian forts make for some haunting seaside ruins.

The oldest housing complex in Riga is a mini timeline of architectural trends.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

A network of fortifications that never saw conflict.

This magnificent white pagoda was constructed to resemble a sacred Buddhist mountain.

This castle resides in a valley known for immense bloodshed during the Middle Ages.

Sweden's oldest street has not changed for nearly a millennium.

A strange-looking 18th-century tower sits on a tiny islet just off Livorno.