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

This small, ingenious cannon once helped regulate Parisian life.

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 oldest and smallest cemetery in Paris is only open to the public twice a year.

France's national museum of scientific and industrial instruments.

This stone angel is one of the biggest caryatids in all of Paris.

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

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

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

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

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

The narrowest street in Paris.

This modest marker near Notre Dame identifies the very center of Paris.

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

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

This 400-year-old tree is actually an immigrant from North America.

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

Executions were once held near this beautiful 18th-century fountain.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

This renovated Art Nouveau bathroom from 1905 is worth the price of admission.

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

One of Jeff Koons’s largest sculptures and his first commemorative work.

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

The curious underground history of keeping Paris clean.