A poem by Arthur Rimbaud is inscribed on the wall of a street that, while it is only one block long, plays a key role in multiple novels.

This mural painted by Keith Haring was done without payment as a gift to entertain the children at the Hôpital Necker.

Claude Monet was baptized in this lavishly ornate Paris church.

Huge Russian Orthodox cemetery in danger of being converted into open public space.

This crumbling, graffiti-covered mansion sits tantalizingly within reach of the proletariat who frequent a public park.

France's Lilliputian park displays over 100 of the country's monuments for visitor perusal.

The oldest stone house in Paris was built by its most famous alchemist.

The heaviest gold coin ever minted.

A unique zoological park home to over 30 species of wild cats, both big and small.

The personal library of the founder of modern neurology is open to visitors.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

This massive sculptural work outside of Paris was four decades in the making—and it's still not quite complete.

Shattered columns and Egyptian pyramids outside of Paris.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

A quarry cum sculpture park where the works of art are chiseled into the very walls.

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

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

The narrowest street in Paris.

The recovered bones of martyrs slaughtered during The Terror are on display in this church crypt.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

This banal Parisian entranceway is not what it seems.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

A modern-day Lascaux cave underneath Paris.

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