An ancient knight and a symbol of the city's freedom.

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

Gargoyle head that brings good luck.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

"Holy Wisdom" overlooks the city that became its namesake.

"Unity, Creativity, Beauty."

A striking symbol of the Bulgarian capital.

A flamboyant five-story building in Bulgaria resembles a crawling snail.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

The little-known second castle that William the Conqueror built in York.

This network of narrow, medieval passages has the most delightful name.

A century-old tradition has culminated in a small but singular collection of feline effigies.

Follow the original medieval paths that wind through this intriguing section of the city.

Every New Year's Day, locals don gaudy costumes and dive into the frigid Firth of Forth.

Poetic, metallic giraffes adorn a square off an Edinburgh thoroughfare.

Edinburgh's oldest statue hides within a parking lot behind the city's iconic cathedral.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

A secret garden in a picturesque Edinburgh village has inspired artists for centuries.

These tiny effigies are believed to represent victims of Edinburgh’s notorious Anatomy Murders.

The fountain marks the area where hundreds of accused witches were burned at the stake.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

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