Former military fort and site of untold horrors during WWII, this island may become the Adriatic's next luxury resort.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

A tiny church on a man-made island in the Adriatic.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

In addition to fine dairy products, the world's most beautiful milk shop also offers a feast for the eyes.

When the rain falls, this drain system turns into a musical instrument.

The bridge that cost Germany a World Heritage Site.

If you visit the burial place of King Frederick the Great, you'll likely find a couple of potatoes sitting on his tombstone.

The "Prussian Versailles" that is as glorious today as when it was built.

A quaint Russian village in the middle of a German metropolis.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This strange statue features a bust of the famous composer plopped atop a woman's body.

These 12th-century catacombs carved into a mountainside were a place of mysticism and Christian hermitages.

Amidst medieval and baroque buildings, five human-sized gherkins stand tall.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

A Jenga-style cylindrical tower of books that appears to go on forever.

Two stunning 17th-century libraries and a cabinet of curiosities.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

One of America's founding fathers lived in this London lodging between 1757 and 1775.