A Belle Epoque bordello turned into a themed love hotel.

This Parisian café is dedicated to great tea and the art of knitting.

The video game-themed street art first popped up in the French city.

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

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

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.

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

What looks like a normal building is really a hollow facade hiding a subway vent.

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

The narrowest street in Paris.

Ordinary art transforms to extraordinary thanks to locals' quirky sense of humor.

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

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

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

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.

Skeletons, medical artifacts, and other obscure and precious treasures all displayed in a wooden pharmacist's cabinet.

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

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

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

The first green space constructed on an elevated viaduct.

Exquisite wall sculptures carved in secret by an early quarryman in an obscure corner of the Paris Catacombs.

This Parisian fountain is a little bit fantasy and a little bit nightclub.