The largest underground church in Europe.

This futuristic observatory at the top of the Pyrénées offers unrivaled views.

Historic medieval fortified city in southwest France.

Ancient paintings known as the "Sistine Chapel of Cave Art."

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

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

The celebrated eyesore created by starry-eyed sweethearts.

This emotive sculpture was originally created for the 1878 World's Fair.

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

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

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

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

A magical, macabre wax museum, beloved by locals, uses real artifacts to depict an assassination from the French Revolution.

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

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

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

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

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

This Paris art space celebrates the creativity and ingenuity that springs from abject poverty, especially in Africa.

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.

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

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