TargonTargon is a commune in the Gironde department in Nouvelle-Aquitaine in southwestern France.WWW mairie-targon.comSights and monumentsÉglise Saint-Romain de Targon, 12th century Romanesque church, listed as a monument historique since 1925.Église de Montarouch, 13th century Romanesque church, once the property of the Knights Hospitaller, now in ruins, listed as a monument historique since 1925.