Five sons of Carcassonne
Five Sons of Carcassonne ( French : Cinq fils de Carcassonne ) refers to the fortifications of the Kingdom of France against the Crown of Aragon after the Treaty of Corbeil (1258). This defensive system included the Quéribus castle as the main defense structure, as well as the castles of Aguilar , Peyrepertuse , Puilaurens and Termes . The chief commander of all these plants resided in Carcassonne . These castles lost their meaning or use after the Peace of the Pyrenees (1659), when the border between Spain and France was moved further south.
The fortresses were former Cathar castles , which were conquered during the Albigensian Crusade (1209–1229) or after and expanded into border fortresses from the middle of the 13th century. The castles of Montségur and Puivert lie a little further to the west than the others and were also fortified after they were taken, but remained in the hands of the nobility; therefore they do not belong to this group.
