Carcassonne
In 1067 Carcassonne became the property of Raimond Bernard Trencavel, viscount of Albi and Nîmes. 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. He added to the fortifications. Carcassonne became a border citadel between France and Aragon.