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

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

Visit the ancient, mysterious Roman catacombs ... in the Netherlands.

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

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

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

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

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

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

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The world's biggest pet store.

Each year, Germany's "City of Dragons" slays the world's largest walking robot.

Taste freshly foraged yarrow and black locust blossoms at this ambitious cocktail bar.

Goethe's "Faust" was inspired by these rock formations known as the "Devil's Pulpit" and "Witches' Altar."

This enchanting mountain plateau celebrates spooky local folklore.

This 8th-century Bavarian monastery is home to an exquisite Baroque-era library.

These blingy, baubled skeletons lie in glass boxes inside a baroque Bavarian church.

This 600-year-old home seems to defy physics.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

An intricate and amazing house built by architect Karl Junker.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

Skeletons dressed in extravagant 18th century royal costumes cavort in the aisles of this German basilica.