The monumental home of Prussia’s eccentric "Cannon King."

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

This magnificent museum claims to house the cranium of a disciple and the skull of a pope.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

Rotterdammers' dirty minds gave this Santa a dirty nickname and cursed it to a life of wandering.

Scale model of St. Peter's Cathedral (Rome) in the middle of a small Dutch town.

A late-medieval Dutch castle with trick fountains in its whimsical water gardens.

Yup, that's a 330-foot yacht passing over the highway.

This massive collection of taxidermy is full of specimens collected by missionaries during their international travels.

The largest 19th century panorama in the world still in-situ.

This historical Netherlands fortress still bears the marks of its single siege.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

Incredible labyrinth of man made caves.

The world’s first interactive human body museum also serves as a chair for a giant orange man.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

A Dutch clog company in the town of Zaandam loves the wooden shoes so much it made a museum for them.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

A Netherlands hotel where you can sleep inside a wine barrel.

Amsterdam's former hotspot for public executions and dissections.

The attic of a four-century-old canal house hides a clandestine church.