City of Carcassonne is encircled by a huge double row of fortified walls that run almost 2 miles long, accentuated by 56 watchtowers. During the 9th and 10th centuries B.C., the village of Carcas was already a very large and active agglomeration, about a mile south of Carcassonne. Its inhabitants migrated to the present location of Carcassonne around 600 B.C.
