Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

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

This cemetery overlooking the Benbulben rock formation is the final resting place of one of Ireland's most beloved poets.

An important landmark in the history of algebraic logic.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

A sculpture of the iconic East German car on four legs is a tribute to those who traveled to Prague seeking asylum.

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

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

This grubby wall is said to be one of the Earth's esoteric energy centers.

The soulless eyes of 82 bronze children stare on forever in remembrance of a horrifying World War II massacre.

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

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

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

This spooky statue sits outside a famous Prague theater.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

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.

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

A collection of old neon signs from all over Poland line a secluded courtyard.

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

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

Relive a Polish uprising via an enormous, century-old cyclorama.