This may be the world's only drive-through windmill.

Preserving the research tools, unexpected inventions, and odd collections of generations of college professors.

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

A tiny house showcases the busy life of a local gnome.

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

People have been placing babies on these lilies for photoshoots since the Victorian era.

This historic Dutch newspaper building is covered with media-themed details—and one unrelated oddity.

This hotel was once home to a steamliner company and became the final rest stop for Europeans heading to the New World.

This collection of 20th-century toys is filled with a lifelong personal toy collection brought from the U.S. to Amsterdam.

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

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

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

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

It appears as if a man is standing behind this giant airport clock, painting the hands in real time.

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

Crouch down, stretch tall, and be sure to flail your legs to pay homage to the Monty Python classic.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

Amsterdam's former hotspot for public executions and dissections.

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

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.