Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

The remains of 40,000 humans, meticulously stacked in a tiny churchyard shed.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

A museum which takes visitors to the côté obscure of Paris.

Perhaps the most beautiful of preserved saints, with a little help from Paris.

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

This little-known relic crypt holds stolen parts of a Roman Empress.

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

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

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

The curious underground history of keeping Paris clean.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

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

Weird wax anatomical models reside here, as do other anatomical specimens.

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

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

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

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

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