This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

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

A Gothic cathedral created from volcanic rocks.

Science fiction's grandfather has a fittingly marvelous tomb.

This natural French spring has been turned into a magical grotto by Roman and medieval constructions.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

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

An icy lake tucked among jaw-dropping alpine panoramas.

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

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

One of the greatest maze designer’s greatest mazes.

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

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

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

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

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

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

A subterranean shelter remains intact under a busy Paris railway station.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

Egyptian Revival movie palace abandoned for decades and restored in 2013.