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

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

The Netherlands is home to a bridge printed out of reinforced concrete.

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

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

A set of 27 bamboo tubes creates an eerie soundscape that changes with the wind.

An awe-inspiring giant blue whale jaw bone stands in the center of this Dutch island.

A radio telescope for listening to the stars, based in one of the cloudiest countries in the world.

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

Hop aboard a charming bog train to explore this rare open-air museum of peat.

Where lovers tie birch branches into long-lived knots.

Unchanged for centuries, this medieval library keeps its books in chains.

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

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

The gargoyles and grotesques of the 21st century are here—22 emoji built into a new building in the Netherlands.

A grassy pyramid named after a French battle.

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

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

The bridges portrayed on EU currency aren't fictional anymore.

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

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

This unique bridge physically lifts a piece of the road into the air to let boats pass by.

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

Colorful and chaotic stacked hotel in North Holland.