The Cathedral of Saint Peter of Beauvais (French: Cathédrale Saint-Pierre de Beauvais) is a Roman Catholic church in the northern town of Beauvais, France. It is the seat of the Bishop of Beauvais, Noyon, and Senlis. Construction was begun in the 13th-century. The cathedral is of the Gothic style. It consists only of a transept (16th-century) and choir, with apse and seven polygonal apsidal chapels (13th-century), which are reached by an ambulatory.