The walls of this medieval church are covered with perfectly preserved frescos, including a pristine example of the Dance of Death.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

The last king of Poland was interred in this church nearly 200 years after his death.

An artificial date palm stands as a memorial to Warsaw's Jewish community.

This bell stars in a tragic love tale and is said to make wishes come true.

The final resting place of more than 200,000 people, this is one of the largest cemeteries in Europe.

This spooky statue sits outside a famous Prague theater.

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

The first mosque in the world to receive electricity.

An unmistakable facial pareidolia in the Julian Alps also includes a fantastic tale.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

A crumbling World War I fort that is reached through a series of concrete tunnels.

Colorful power station with a chimney equipped with a gallery for exhaust monitoring equipment.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

Museum dedicated to the terror regimes of Hungary.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

A beautiful drive through the foot of the Alps traces the path of 15th-century Turkish raids.

The "dragon babies" of southeastern Europe.

This massive subterranean fissure is known as the "underground Grand Canyon."

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

Perched above the bustling town of Kerak is a sprawling, ruinous castle that has witnessed nearly a millennia of Levantine history.