Before setting foot in the land of Armagnac, take a short detour through the village of Grenade-sur-l’Adour, a 14th century English bastide which controlled the passage of the river Adour. The central square of Tilleuls, where three weekly markets are held on Mondays, Wednesdays and Saturdays, is overlooked by the two bell towers of the church of Saint-Pierre and Saint-Paul and lined with shelters and galleries that house cafés and shops. All around, small picturesque streets recall the old fortifications: Rue des Remparts, Rue des Anciens Fossés, Rue du Chemin de Ronde, along which beautiful half-timbered facades are lined up.
 On the other side of the Adour, at Larrivière-Saint-Savin, stands the Chapelle Notre-Dame-du-Rugby and its small adjoining museum, while to the north of Grenade-sur-l’Adour, at Bascons, the Landes bullfights are celebrated in a chapel and museum.