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The "Vauban fortress" was initially a strategic fortification established by Philippe le Bel, circa 1300. The donjon was rebuilt in 1480-1490 by Jehan II de Brosse. In 1689, Ferry reinforced the walls of the Donjon to set up a battery of 9 canons and a signaling point. In 1693 a lower circular battery was set up to control access to the Charente River. The donjon received a signal station from 1889 to World War II.