This mural painted by Keith Haring was done without payment as a gift to entertain the children at the Hôpital Necker.

A haunting collection of the vanished and disappearing natural world.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

A surrealist timepiece by the artist of melting clocks.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

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

A museum of magic with a Sadist past.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

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

This massive library holds what was once the largest book collection in the world.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

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

Stripes of human ashes cover a back lawn in the most sought-after burial grounds in Paris.

A letterpress workshop committed to the art of printing, with unique and creative designs.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

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

Western Europe's only representation of a Roman goddess still in its original location sits in an unassuming park.

This anatomical sculpture raises awareness about violence against women and promotes gender equality.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

The bronze uniforms commemorate the vital role of women during World War II.

Rare collection of medieval books under lock and key.

Oxford University's stateliest library seems designed to make students truly feel the weight of knowledge.

Banksy's image of a naked man dangling from the window of a sex health clinic.