Chai Ouvert at Domaine d’Ognoas turns The Domaine’s former stronghold houses ancient cellars that are unique in Bas-Armagnac. Here, everything is done to offer you a true encounter with the spirit of Armagnac into a place-based visit. In Arthez-d’Armagnac, the event connects local history with a named site, giving the public a precise point of entry into the region’s heritage. The strongest part of the offer is the relationship between subject, guide and setting.