An ancient Egyptian temple sits within a modern European museum.

This steel frame is a skeletal mirage of a lost 16th-century stone building.

Lombardy poplars planted to imitate the size and shape of the Cathedral of Notre-Dame de Reims.

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

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

Home to the world's oldest functioning orrery.

The largest flower auction house in the world.

A statue of the second-tallest Dutchman in history.

A Netherlands hotel where you can sleep inside a wine barrel.

The ruins of a medieval castle that once belonged to one of the most powerful families in the Netherlands.

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

A monument hidden in the woods built in 1938 as a getaway for a Dutch museum curator.

Drive past the giant fruit sculptures and up to the window for a menu of fruity treats.

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

Europe's official "zero-level," the equator of elevation.

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

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

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

Pull up and have a drink at a museum filled with hundreds of years worth of shipwreck artifacts.

Tucked away in the Leiden city hall are a group of works by famed artist MC Escher.

A dream-like maze full of strange art, surreal spaces, and fantasy landscapes to get lost in.

A collection of biblical memorabilia.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

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