 It has been listed since 1840 as a "monument historique" by the French Ministry of Culture.It was formerly the seat of the Diocese of Lescar, suppressed under the Concordat of 1801 and divided between the dioceses of Agen and Bayonne.The building was begun in 1120 by Bishop Guy de Lons, and was sacked by the Protestants during the reign of Jeanne III of Navarre.