This ancient theater was once the home of fierce gladiatorial battles.

The sunken structure looks like the victim of a catastrophic flood.

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

The world's tallest bridge is also possibly the most elegant.

This bridge was constructed from the rubble of the infamous Bastille.

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

Museum in a swimming pool where the water still flows.

The world's largest reflecting pool is just two centimeters deep.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

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

An aluminum skeleton brings Chinese mythology to the French shore.

Museum on French naval history, with magnificent figureheads, a historic diving suit, and a boat used by Napoleon.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

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

How did a French journalist’s grave become the sexiest statue in the cemetery?

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.

The subterranean "lake" below the Paris opera house inspired the Phantom of the Opera's lair.

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

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

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

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

France's national museum of scientific and industrial instruments.