This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

The world's only museum devoted to the wonders of fluorescence.

Graffiti covers the walls of a room where university students through the centuries have waited nervously to defend their theses.

One of the oldest masonic temples in the Netherlands, built in 1757.

An industrial relic is now one of Europe's most staggering art spaces.

This painted Lego bridge is the product of over a century of locomotive history.

This "floating railway" is one of the world's oldest monorail systems.

An open-air sewer system that was covered piece-by-piece over 300 years.

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

This gigantic monument hidden in the woods was built to thank the Dutch for sheltering Belgian refugees during World War I.

A long-closed church turned into a saintly skate park.

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

This still-celebrated home was a radical architectural experiment in 3D De Stijl.

The 20-mile causeway that separates the Netherlands from the sea.