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

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

A modern-day Lascaux cave underneath Paris.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

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

Architect Le Corbusier built his friend a cubist house to match his impressive collection of cubist art.

The floorboard scrawling of a tragic madman is on public display outside a Paris hospital, much to the dismay of its opponents.

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

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

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

The first green space constructed on an elevated viaduct.

This Parisian café sticks almost exclusively to an ethos of reuse.

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

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The curious underground history of keeping Paris clean.

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.

A surrealist timepiece by the artist of melting clocks.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

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

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

Paris' linguistic guide to the international language of, yes, love.