Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

The remains of the medieval wall that once surrounded Paris with ties to the construction of the Louvre.

The historic Masonic Lodge in which the first-ever female Mason was initiated.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

A haunting collection of the vanished and disappearing natural world.

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

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

This recessed garden protects thousands of mountain plants by creating its own microclimates.

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

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

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

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

Notorious artist squat renovated into legal studios.

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

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

A curious collection of locks and keys.

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

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

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

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

This demon atop the Notre-Dame de Paris looks utterly bored.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

The narrowest street in Paris.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.