This 11th-century castle sits so low you can't see it behind the surrounding buildings.

The works of poetry's biggest names grace the walls of the city of Leiden, all carefully painted by hand.

This early 19th-century graveyard is the final resting place of Vincent van Gogh's mother.

This public toilet built in the famous Amsterdam School architectural style is a Dutch national monument.

This century-old street sign is a forgotten remnant of the old city.

Science meets wall art to highlight the beauty of famous mathematical equations.

The location of the world's first telescope demonstration.

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

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

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

A luxury hotel housed in a former 15th century Gothic church.

This historical Netherlands fortress still bears the marks of its single siege.

An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.

This towering church is home to a world-famous organ and a treasure trove of medieval art.

The place where Czar Peter I of Russia resided in 1697 during his Grand Embassy.

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

The Bloemen Route, or “Flower Route”, stretches 25 miles through prime Dutch tulip country as a result of “tulip mania,” the world’s first economic bubble.

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

'The Letters of Utrecht' lays out a ribbon of poetry one letter at a time, with no final verse in sight.

Atop this former dutch railway office sits an interstellar work of art.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

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

Colorful and chaotic stacked hotel in North Holland.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.