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

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

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

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

Incredible labyrinth of man made caves.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.

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

A true Valhalla for cactus and succulent lovers.

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

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

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

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

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

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

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

This museum inside Amsterdam's largest cemetery explores how people deal with death.

The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

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

This cheese shop also houses a museum devoted to Dutch dairy.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

A beautiful maze marks where three countries meet.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

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