Manchester's abandoned train depot lingers in a post-industrial purgatory.

A giant wooden soda bottle pays homage to a distinctly British drink on the very spot where it was invented.

These lovely Turkish-styled baths were brought back to life after winning a reality show competition.

Hidden on the urban banks of a Manchester river are a series of abandoned waterside industrial sites.

Have a seat with the father of modern computing at this Manchester monument.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

Dating back almost 400 years, the oldest public collection library in the United Kingdom was once the study hall of Karl Marx.

A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

A modern-day Lascaux cave underneath Paris.

The first green space constructed on an elevated viaduct.

This Parisian café sticks almost exclusively to an ethos of reuse.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

France's national museum of scientific and industrial instruments.

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

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

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

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

Abandoned railway line circling the city of Paris.

Notorious artist squat renovated into legal studios.