This one-time health resort was used by aristocrats around the world.

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

This seven-sided Romanesque chapel is regarded as the oldest building in Rovinj.

Picturesque basketball courts sheltered by historical defensive walls and with an enviable sea view.

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

Relics designed to contain and conceal Yugoslavian submarines.

According to a local legend, this old castle could only be built after a woman was immured in the walls.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

In the heart of Tirana, this underground nuclear bunker has been transformed into a museum.

In this recreational park, two artificial lakes share a surprising connection to Wembley Stadium.

This magical museum celebrates the life and work of a seminal children's book writer (and occasional spy).

Luxurious hotel designed to stir the imagination of its many visitors.

Site of the golf match between James Bond and Goldfinger.

The actual “Hotel Rwanda” that became a hiding place and refuge from the horrors of genocide in 1994.

One English town's celebratory landmark spurred more trouble than anticipated.

A village on the east coast of England that has almost completely eroded into the North Sea.

A petite castle folly in the English countryside.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

This "floating railway" is one of the world's oldest monorail systems.

This futuristic German television spire is actually the world's largest digital clock.

Liechtenstein's royal family calls this medieval alpine castle home.