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

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 frog-themed restaurant was frequented by Picasso, Saint-Exupéry, and more.

The French leader's hat sits in a glass case at the oldest restaurant in Paris.

This 18th-century sundial was designed to calculate the date of Easter each year.

An unusual number plate signifies the building's saucy past.

A museum dedicated to linguistics, from how babies learn to talk to endangered and extinct languages.

A poem by Arthur Rimbaud is inscribed on the wall of a street that, while it is only one block long, plays a key role in multiple novels.

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

Marie Antoinette and Napoleon Bonaparte were fans of this 200-year-old French chocolatier.

A simple plaque on the facade is the only reminder that the treaty ending the American Revolution was signed inside.

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

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

Former home to Polish artist Tamara de Lempicka's dazzling Art Deco duplex studio.

The only remaining vespasienne in Paris is a (stinky) relic of Resistance.

The floorboard scrawling of a tragic madman is on public display outside a Paris hospital, much to the dismay of its opponents.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

This charming, flower-filled, paved cul-de-sac is filled with artists' studio-houses built in the 1920s.

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

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

This print shop boasts one of the largest pinball arcades in San Francisco.

The tea room that pushed the boundaries of adorable straight into... we can't find the words.

The historic building's ornate stained glass fixture has survived the devastating 1906 earthquake, ensuing fires, and multiple redevelopment attempts.