This serene Cistercian abbey is one of Gers' architectural gems, and quite possibly the loveliest abbey in southwest France. Founded in 1151 and guarded by a 14th-century fortress door turned pigeon loft, it was abandoned after the Revolution, and the building is remarkably well preserved. Among the rooms on show are the monks' cloister, refectory and sleeping cells. It's near Valence-sur-Baïse, 10km south of Condom.