The first green space constructed on an elevated viaduct.

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

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

This Parisian fountain is a little bit fantasy and a little bit nightclub.

Where the high court feasted, frolicked, and high courtesans put their royal lovers' diamonds to the test.

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.

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

Indents in the pavement are all that remain from a grisly death machine in Paris.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

Stroll through retro Paris while shopping for old postcards and discarded doll heads.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

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.

A museum of carnival attractions where you are invited to ride the rides.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

Abandoned railway line circling the city of Paris.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

Notorious artist squat renovated into legal studios.

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

Diego Rivera's massive tiled fountain and failed infrastructure project.

The world's largest collection of preserved trolleybuses.

The largest bottled beer collection in the world holds over 22,000 unique beer bottles.

An encyclopedic collection of mammal penises.