Inside a former cabaret, seven floors of erotic art.

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

Egyptian Revival movie palace abandoned for decades and restored in 2013.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

A Belle Epoque bordello turned into a themed love hotel.

One of the oldest masonic museums in Paris.

A modern-day Lascaux cave underneath Paris.

The curious underground history of keeping Paris clean.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

This Parisian gem is one of the most incredible ethnographic museums in the world.

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

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

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

The Sun King's military models, saved from the Louvre.

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

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

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

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

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.

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

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

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

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