Aunis
![](/Images/godic/202412/22/Aunis_with_Aquitaine2509.png")
![Chalk cliffs to the north and south of La Rochelle date from the Late Jurassic.](/Images/godic/202412/22/La_Rochelle_00012509.jpg")
![The Île de Ré Bridge has connected La Rochelle to Rivedoux-Plage since 1988](/Images/godic/202412/22/Pont_île_de_Ré012509.jpg")
![The salt marshes and French: '(l'or blanc)' (](/Images/godic/202412/22/Marais_salants_ile_de_Re2509.jpg")
Aunis is a historical province of France, situated in the north-west of the department of Charente-Maritime. Its historic capital is La Rochelle, which took over from Castrum Allionis (Châtelaillon) the historic capital which gives its name to the province.