This surreal art house looks like a geometric version of a small chapel.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

Former utopian colony based on the belief that the universe exists in a hollow sphere.

An unusual round church in London with a Templar past.

This abandoned airplane hanger is said to have once been a top secret launch facility.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

The place where World War I began.

Oriental bazaar in the heart of Sarajevo.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

This abandoned Slovenian military barracks has become a punky-political art squat.

A whimsical bridge adorned with decorative dragons.

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

A miniature train-ride through Slovenia's largest cave system.

A musical instrument played by the sea.

A wonderfully strange collection of 500+ stuffed frogs doing people things.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

Gargoyle head that brings good luck.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

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

Bridge that died in war and was resurected.

The sad remains of a monument to martial arts legend and movie star Bruce Lee—in the middle of Balkans.

The final resting place to 300 Victorian-era pets hides inside the city park.

This former medical factory gives home to cutting edge arts in the shadow of a gas works.