The largest medical and anatomical collection in France lies hidden from the public.

A mechanized clock where a man fights off a dragon, crab, and rooster.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

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

Claude Monet was baptized in this lavishly ornate Paris church.

The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

A 400-year-old church covered floor to ceiling in ex-voto offerings from the faithful.

Ordinary art transforms to extraordinary thanks to locals' quirky sense of humor.

Saintly bones pressed into a wax effigy of a Catholic superstar.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

The recovered bones of martyrs slaughtered during The Terror are on display in this church crypt.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

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

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

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

Paris' fabled purveyor of exotic taxidermy and natural history curios.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

Statue of death tucked in the University of Medicine courtyard.

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

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

A museum of magic with a Sadist past.

This museum houses an imposing skeleton army comprised of creatures great and small.

A haunting collection of the vanished and disappearing natural world.

One of the oldest medical collections in Europe focusing on rare surgical instruments.