 The façade is in Renaissance style; the gate, sometimes attributed to Jean Bullant, consists of a tympanum leading to columns grooved in Corinthian capitals, the whole surrounded by a very decorated classic entablature, surmounted in the extremities by two roof lanterns.The salamander and the initials of the king Francis I of France appear on the spandrels.The base of the bell tower and the chapel of the Virgin Mary are the oldest parts of the building.