Largest illuminated advertisement sign in the world.

According to a satirical conspiracy theory that persists today, this German city of 300,000 is a hoax invented by the CIA.

A ruined castle stands atop a hill surrounded by dragon lore.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

This "floating railway" is one of the world's oldest monorail systems.

This former steel and coal plant is now a neon-lit industrial fantasia.

Be it nature, art, or abandoned military architecture this eclectic German "museum" has you covered.

An electrical pylon under whose legs a normal gauge train can run.

This futuristic German television spire is actually the world's largest digital clock.

Twisted buildings adorn the banks of the Rhine river.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

Modern art commemorates one of the first military actions of World War II.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

Pompeii's less famous neighbor is still revealing her secrets.

The oldest volcanology research center in the world.

The walls and streets of the ancient city are peppered with penises.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

A striking 12th-century-style castle built on the edge of a cliff.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

This legendary city has been a tourist attraction for centuries.

The hallucinogenic center of the ancient world.