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

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Notorious artist squat renovated into legal studios.

This Parisian café is dedicated to great tea and the art of knitting.

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

Fully loaded, Tunisian-style sandwiches are on the menu at this unassuming hole-in-the-wall.

The site of slaughterhouses that once satisfied Parisians' taste for horse meat is now home to a park and book market.

Grab a life-changing ham sandwich at this former horse butchershop.

For more than a century, Parisians have come for affordable dishes in a grand converted train station.

Executions were once held near this beautiful 18th-century fountain.

Claude Monet was baptized in this lavishly ornate Paris church.

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

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

A mud statue stands in the dark tunnels, seeming to hold up the weight of the city above.

Despite being considered a thoroughly American sport, basketball's oldest surviving playing field is found in the basement of a Paris YMCA.

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

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

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

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