The spectacular and eerie moss-covered grave site of 19th-century Belgian merchant.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

A bridge that has seen many reiterations over its lifetime.

The location of the world's first telescope demonstration.

A trio of red, white, and blue stones embedded in the streets of Leiden are markers of medieval territory and law.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

The birthplace of most all of Europe's space missions is here on the Dutch coast.

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

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

This Dutch art piece became a Russian icon.

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

This medieval castle was painted pink as part of a now-abandoned children's theme park.

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

A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

A miniature city, once ruled by the Queen of the Netherlands.

A market built atop boats is one of the few floating holiday markets in Europe.

A poignant museum dedicated to the history of the Dutch resistance against Nazi occupation

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

Amsterdam's former hotspot for public executions and dissections.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

This pirate-broadcasting-tower-turned-restaurant played a rebellious role in the history of Dutch television.

One of Amsterdam's narrowest houses is located right across the canal from its widest.