Carcassonne ( ) is a fortified French town in the Aude département, of which it is the prefecture, in the former province of Languedoc. It is separated into the fortified Cité de Carcassonne and the more expansive lower city, the ville basse. The folk etymology—involving a châtelaine named lang: Carcas, a ruse ending a siege and the joyous ringing of bells ("lang: Carcas sona")—though memorialized in a neo-Gothic sculpture of Mme. lang: Carcas on a column near the Narbonne Gate—is of modern invention. The fortress, which was thoroughly restored in 1853 by the theorist and architect Eugène Viollet-le-Duc, was added to the UNESCO list of World Heritage Sites in 1997.

History

First signs of settlement in the region have been dated to about 3500 BC, but the hill site of Carsac—a Celtic place-name that has been retained at other sites in the south—became an important trading place in the 6th century BC. The Volcae Tectosages fortified the oppidum.

Carcassonne became strategically identified when Romans fortified the hilltop around 100 BC and eventually made it the colonia of Julia Carsaco,

In 462 the Romans officially ceded Septimania to the Visigothic king Theodoric II who had held Carcassonne since 453; he built more fortifications at Carcassonne, which was a frontier post on the northern marches: traces of them still stand. Theodoric is thought to have begun the predecessor of the basilica that is now dedicated to Saint Nazaire. In 508 the Visigoths successfully foiled attacks of the Frankish king Clovis. Saracens from Barcelona took Carcassonne in 725, but King Pippin the Younger drove them away in 759.

In 760, Pippin took most of the south of France, although he was unable to penetrate the impregnable fortress of Carcassonne.

In 1067 Carcassonne became the property of Raimond Bernard Trencavel, viscount of Albi and Nîmes, through his marriage with Ermengard, sister of the last count of Carcassonne. In the following centuries the Trencavel family allied in succession either with the counts of Barcelona or of Toulouse. They built the Château Comtal and the Basilica of Saint-Nazaire. In 1096 Pope Urban II blessed the foundation stones of the new cathedral, a Catholic bastion against the Cathar heretics.

Carcassonne became famous in its role in the Albigensian Crusades, when the city was a stronghold of occitan cathars. In August 1209 the crusading army of Simon de Montfort forced its citizens to surrender. After capturing Raymond-Roger de Trencavel and imprisoning and allowing him to die, Montfort made himself the new viscount. He added to the fortifications. Carcassonne became a border citadel between France and the kingdom of Aragon (Spain).

In 1240 Trencavel's son tried to reconquer his old domain but in vain. The city submitted to the rule of kingdom of France in 1247, and King Louis IX founded the new part of the town across the river. He and his successor Philip III built the outer ramparts. Contemporary opinion still considered the fortress impregnable. During the Hundred Years' War, Edward the Black Prince failed to take the city in 1355, although his troops destroyed the Lower Town.