 The severe 13th century façade, surmounted by a tower with a slate roof, has a simple vaulted portal with a pointed arch.The present sacristy is in origin a chapter house of the 14th century, with Gothic vaulting supported by central pillars; this is of Tolosan construction and evokes the "palm trees" of the Dominicans..The [[nave]] has [[ogive]] vaults of the 14th century.