The storefront of a ramshackle Parisian puppet theater.

The approximate spot where the last Grand Master of the Knights Templar was put to death.

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

A Parisian boutique devoted to la Sape, the elegant Congolese fashion subculture rooted in European colonization.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

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

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.

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

Collection of antique taxidermy and natural specimens, near one of Paris's oldest flea markets.

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

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

The personal library of the founder of modern neurology is open to visitors.

An odd museum dedicated to French fakes.

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

One of the oldest masonic museums in Paris.

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

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

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

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

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

BDSM, 1930s Style.

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.

An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.