These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

The patron saint of spinsters grasps a container of dried blood.

A stairway to heaven, or to nowhere at all.

Huge winged monument in the United Kingdom.

Renaissance villa and gardens complete with a tormented colossus.

No need to strap in for a "ride" on this walkable roller coaster.

Largest monument in Colombia depicts 14 lancers who drove back an army.

70,000 empty bottles of Coke comprise an ad seen only from the air.

Enormous statue of the Emperor of the Mongols.

The first museum in the world devoted to sexual gadgetry.

A Jenga-style cylindrical tower of books that appears to go on forever.

A controversial artwork draws attention to the dark history of Prague's "Suicide Bridge."

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

A bus with a butt and biceps to put Olympic athletes to shame.

A surreal statue honoring Prague's favorite literary son.

An existential riddle in the world's largest ancient castle.

An Orwellian sculpture with eyeball cameras watches passersby.

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

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

Tucked away near more famous landmarks lies a statue meant to symbolize the confluence and continuing development of human culture.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

The ruins of an 800-year-old monastery boasts the tallest round tower in Ireland.

A hugely vast Irish landscape of barren rock that stretches for miles.