An all-American grocery store in Paris sells U.S. "cuisine" like Pop-Tarts and Heinz ketchup to homesick ex-pats.

This small, ingenious cannon once helped regulate Parisian life.

The tombstone of an unfortunate explorer who disappeared in the Paris Catacombs.

One of the oldest masonic museums in Paris.

Dedicated to the art of hunting, with juxtapositions of contemporary art.

This frog-themed restaurant was frequented by Picasso, Saint-Exupéry, and more.

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Two awe-inspiring globes from the reign of the Sun King hang from the ceiling of France's national library.

A modern-day Lascaux cave underneath Paris.

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

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

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

This museum houses an imposing skeleton army comprised of creatures great and small.

A haunting collection of the vanished and disappearing natural world.

This stone memorial commemorates a group of French patriots slain by French fascists.

Longest canal tunnel in the world, abandoned in the 1960s.

An often-shuddersome journey into a low-tech, robotic themepark.

Walk through spectacular aisles of hanging meat and wagon wheel–sized cheese at the world's largest wholesale food market.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.