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

Survival capsules find a second life as a unique hotel.

This neighborhood of futuristic ball houses looks like an alien settlement in a science fiction film.

The ruins of a medieval castle that once belonged to one of the most powerful families in the Netherlands.

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

Visit the ancient, mysterious Roman catacombs ... in the Netherlands.

Incredible labyrinth of man made caves.

This miniature take on the Kremlin is one Dutch man's retirement project.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

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

Rich with fauna and flora, nature-lovers can walk across the sea at this UNESCO World Heritage spot.

Take a stroll through the hellish grotesques of Hieronymus Bosch in this elaborate Netherlands church.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

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

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

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

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

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.

Colorful and chaotic stacked hotel in North Holland.

An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.

This pirate-broadcasting-tower-turned-restaurant played a rebellious role in the history of Dutch television.

This subterranean studio is filled with fascinating kinetic art.

Peek through a transparent pyramid and drink in the mountain made of books.