An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

An enormous Polaroid picture adds an artistic flair to Rotterdam.

Wind power station for making famous Ketel One vodka.

Rumored to have been frequented by Vincent van Gogh, it's the only remaining genever producer in the Hague.

A nuclear reactor created for Eisenhower's "Atoms for Peace" campaign is now used for research at a Dutch university.

The location of the world's first telescope demonstration.

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

The largest 19th century panorama in the world still in-situ.

A preserved building where the dead were once watched for signs of life.

Strange secondhand shop showcasing taxidermy and oddies

Survival capsules find a second life as a unique hotel.

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

A miniature city, once ruled by the Queen of the Netherlands.

Hidden within a Netherlands crater is a stone bed that lets those who lie in it see the sky as a curved surface.

A rare double mill nestled along the banks of the Aa river.

An interactive museum dedicated to preserving and sharing the history of the home computer.

This strange building looks like a medieval fortress crashed into a 1960s Brutalist office block.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

Carved fountains poignantly placed in parks and in front of special monuments.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’

How did a lighthouse wind up in the middle of this landlocked German city?

This small condiment museum makes all manner of mustards with a 200-year-old mill.

A poignant mural honors the heroic teenage non-conformists who took on the Nazis and paid the ultimate price.

If the tunes of antique organs and musical marionettes don't intoxicate you, the draft beer certainly will.