Glasgow's memorial to the International Brigade volunteers from Great Britain who fought and died in the Spanish Civil War.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

The powerful party began with a secret meeting in this shikumen in 1921.

A giant scale model giving a sneak peek at what urban planners see for Shanghai by 2020.

The once highest point in China blends symbolic design with a kick of adrenaline.

The most famous location in China was home to whole dynasties worth of imperial rulers.

A recently restored Shoreditch landmark with ties to Jack the Ripper.

Inside a former cabaret, seven floors of erotic art.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The video game-themed street art first popped up in the French city.

What looks like a normal building is really a hollow facade hiding a subway vent.

How did a French journalist’s grave become the sexiest statue in the cemetery?

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

Paris' linguistic guide to the international language of, yes, love.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

An unusual round church in London with a Templar past.