The patron of this extravagant Art Nouveau confection insisted that nothing less than a boat should project from its facade.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

What was once an underground Nazi city is now Europe's largest bat reserve.

Real bones which are said to have belonged to a Polish dragon.

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

A museum honoring Germany’s cucumber mecca offers a great dill of gherkin history.

An abandoned monastery sits on a far-off island in the Adriatic Sea.

The roof of this ancient mausoleum is made from a single Istrian stone weighing a massive 230 tons.

What was once a bustling mining installation is now a bustling hub of contemporary art.

This Italian dam is covered in salt-hungry goats who manage to scale its almost vertical face.

A fairytale island floats in the middle of Italy's little-known Lake Orta.

This building features dozens of faces along its facade, although one is a bit chilling.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

This monastery built into a cliff hides a perfectly preserved hermit in a glass coffin.

Caves famous for the dragon-slaying saint who lived there.

A once-luxurious, now abandoned hotel in the Italian Alps.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

A university observatory dome painted to resemble the beloved 'Star Wars' droid.

The world's oldest rose is so tough it survived being bombed in World War II.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

This tremendous timepiece was once the largest cuckoo clock in the world.

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