Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This one has sailed five times as far as Sir Francis Drake's famous ship.

London's smallest police station is barely the size of a phone booth.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

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

A whimsical bridge adorned with decorative dragons.

Formerly Yugoslavia's "forbidden island," this sleepy little city still holds the abandoned remains of military strongholds.

Northern Ireland's Brobdingnagian stepping stones.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

A Serbian church lit by chandeliers made of weapons.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

The curios of pharmacist and collector Henry Wellcome.

Vibrant street art created with mixed media.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

Op-art architecture designed for happiness.

The final resting place for the remains of 143 Habsburg royalty.

An ethereal glowing blue ocean cave in Croatia.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

Pilgrimage site for star-crossed lovers.

It houses the remains of a 17th-century version of the Titanic.