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

This former steel and coal plant is now a neon-lit industrial fantasia.

Go inside a revolutionary, cage-less zoo where 35 species live and some of them roam free alongside their human visitors.

This disused VLF radio station is no longer in service but the surrounding town still bears its name.

Located inside Hoge Veluwe National Park, this museum began as the private collection of a prominent female art collector.

What looks like an ordinary house from the outside is actually a rotating sculpture.

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

This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

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

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

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

This stately council chamber hasn't changed since 1545.

While most bridges allow roads to pass over water, this one allows water to pass over a road.

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

Hiding the longest subterranean river known in the world.

Four giant movable street lights decorate this modern Rotterdam square.

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

Lumps of significant stone from around the world surround a flaming monument for peace.

The location of the world's first telescope demonstration.

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

Believed to be the country's tallest waterfall, the Njupeskär is actually much smaller.

This declassified Cold War bunker hosts a large collection of Swedish aircraft.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.