A market built atop boats is one of the few floating holiday markets in Europe.

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

A forgotten and crumbling Yugoslav monument to the victims of fascism.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

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

An ancient Egyptian temple sits within a modern European museum.

One of the great math minds of the 17th century is underfoot in this 900 year old Dutch church.

A plaque hidden in the law faculty at Leiden University honors the first scientist to make liquid helium.

The Netherlands' first car tunnel has an unusually rectangular shape.

The mass grave of the 27 victims of the "Vampire of Hanover."

A six-story, asymmetrical tower filled to the brim with scientific experiments.

The resting place of 18th century German mummies.

Ruins of a German Castle on top of a towering stone pillar.

This historic little railroad runs through some of the most beautiful scenery in Germany.

Walk through Czech history in Prague's largest graveyard.

The oldest garden in Prague, once part of an medieval orchard.

A church of bones, decorated with 40,000 human skeletons.

No one knows the origin of this creepy little stone man with an oversized phallus.

An art-filled botanical garden and former dyeworks hiding in plain sight.

This church looks more like a spaceship than a house of worship.

Explore the art and history of intricate, hand-crafted tile designs at this small museum.

An 18th-century lighthouse built on a 16th-century castle is now a monument to the maritime beacons of Scotland.

A 30-acre garden inspired by the principles of modern physics.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.