Carcassonne (ˌkɑːrkəˈsɒn, also US-ˈsɔːn,_-ˈsoʊn, kaʁkasɔn, kaχkaˈsɔnə; Carcassona kaɾkaˈsunɔ; Carcaso) is a French fortified city in the department of Aude, region of Occitania. It is the prefecture of the department.
Inhabited since the Neolithic, Carcassonne is located in the plain of the Aude between historic trade routes, linking the Atlantic to the Mediterranean Sea and the Massif Central to the Pyrénées. Its strategic importance was quickly recognized by the Ancient Romans, who occupied its hilltop until the demise of the Western Roman Empire. In the fifth century, the region of Septimania was taken over by the Visigoths, who founded the city of Carcassonne in the newly established Visigothic Kingdom.
Its citadel, known as the Cité de Carcassonne, is a medieval fortress dating back to the Gallo-Roman period and restored by the theorist and architect Eugène Viollet-le-Duc in 1853. It was added to the UNESCO list of World Heritage Sites in 1997 because of the exceptional preservation and restoration of the medieval citadel. Consequently, Carcassonne relies heavily on tourism but also counts manufacturing and winemaking as some of its other key economic sectors.
Carcassonne is located in the south of France about east of Toulouse. Its strategic location between the Atlantic Ocean and the Mediterranean Sea has been known since the Neolithic era. The town's area is about , which is significantly larger than the numerous small towns in the department of Aude. The rivers Aude, Fresquel, and the Canal du Midi flow through the town.
The first signs of settlement in this 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 sixth century BC. The Volcae Tectosages fortified it and made it into an oppidum, a hill fort, which is when it was named "Carsac".
The folk etymology—involving a châtelaine named Lady Carcas, a ruse ending a siege, and the joyous ringing of bells ("Carcas sona")—though memorialized in a neo-Gothic sculpture of Mme.