For the holidays, the tallest broadcasting tower in the Netherlands turns into one of the world's tallest Christmas trees.

This small electronics museum is full of whirring, humming, clicking ephemera.

The birthplace of most all of Europe's space missions is here on the Dutch coast.

This imposing tower named after the mythical sword of King Arthur is considered the tallest freestanding climbing wall in the world.

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

A true Valhalla for cactus and succulent lovers.

Devious political maneuvering and four ancient, working telescopes are central to the world's second-oldest observatory.

A 1:20 scale piece of the Netherlands commissioned by a queen lets visitors take a stroll as giants.

A luxury hotel housed in a former 15th century Gothic church.

“And the Lord said unto Johan, build for thee an ark for the end of the world is approaching.”

A historic observatory now an astronomy museum beautifully situated at the moat of the Middle Age city centre.

Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

Home to the world's oldest functioning orrery.

The tallest waterfall in the Netherlands is a lovely, stepped feature that is only 50 feet tall.

A unique collection of gilded age mechanical pianos.

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

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

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

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

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

Incredible labyrinth of man made caves.

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

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

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