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

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

The spiral staircase hidden inside this giant Parisian column was likely built for Catherine de Medici's astrologer.

This Parisian gem is one of the most incredible ethnographic museums in the world.

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

In this Parisian garden's grotesque former life as a zoo it fed exotic animals to the bourgeois and put humans on exhibit.

The headless bodies of more than 1,300 guillotined victims of the Reign of Terror are buried here in mass graves.

BDSM, 1930s Style.

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

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

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.

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

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

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

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

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

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

The curious underground history of keeping Paris clean.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

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

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

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

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

The history of radiation is on safe display at the foot of a radiation science laboratory.