A huge teapot illuminates a home for the elderly.

A modern reimagining of a medieval city gate.

This charming pup is meant to celebrate the youth and stubbornness of the city's students.

A giant floating rubber duck-bunny painted with a different design every year.

Rotterdammers' dirty minds gave this santa a dirty nickname and cursed it to a life of wandering.

A dramatic art installation features a BMW flying out of a building in Rotterdam.

This neighborhood of futuristic ball houses looks like an alien settlement in a science fiction film.

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

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

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

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

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

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

One of the most well-preserved castles in Italy also contains a rare medieval example of a port fortification.

Pilgrimage site for star-crossed lovers.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

From Austrians to Nazis to Soviets, this historic Budapest fortress has a history as complex as the city itself.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.