A large measuring stick marks the lowest point of a country that is partially under sea level.

A set of beech hedges planted in the 19th century forms a tunnel that takes on a different appearance in every season.

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

Nestled in the woods lies this land art project: a hybrid between park, maze and natural monument.

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

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

Home to the world's oldest functioning orrery.

Its town washed away centuries ago, this lonely tower by the sea tells the tale of a mermaid and a curse.

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

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

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

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

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

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

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

The last of Amsterdam's original sea level markers remaining in place.

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

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

The former headquarters of history's oldest megacorporation.

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

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

The giant scales in this museum can still tell if someone is one of the devil's brides just by weight.

Take a stroll through the hellish grotesques of Hieronymus Bosch in this elaborate Netherlands church.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.