The vaulted ceiling is home to a scurry of “squirrelgoyles.”

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

One of the last umbrella repair shops in Paris upholds the nostalgic art of umbrella making.

A glamorous hotel that once accommodated French resistance fighters and concentration camp survivors.

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

A short distance from the Eiffel Tower is the final resting place of several of the city’s more well-known and interesting characters.

This innocuous-seeming building is actually the remnant of a major wartime brothel.

The oldest and smallest cemetery in Paris is only open to the public twice a year.

The headless bodies of more than 1,300 guillotined victims of the Reign of Terror are buried here in mass graves.

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

This museum in a Paris apartment gives a unique look at the iconic French singer's life.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

The narrowest street in Paris.

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

A subterranean shelter remains intact under a busy Paris railway station.

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

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

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

The oldest stone house in Paris was built by its most famous alchemist.

Experience park where visitors are told to expect the unexpected.

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

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

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

Underground farm located in a former bank vault deep within the bowels of Tokyo's business district.