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

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

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.

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

This small, ingenious cannon once helped regulate Parisian life.

Marie Antoinette and Napoleon Bonaparte were fans of this 200-year-old French chocolatier.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

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

An odd museum dedicated to French fakes.

Claude Monet was baptized in this lavishly ornate Paris church.

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

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

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

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

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

Shop at the 200-year-old store where Julia Child stocked up on copper cookware.

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

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.

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

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

This oddly shaped boulder in Paris is rumored to be cursed.

BDSM, 1930s Style.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.