The façade, designed by Simón de Colonia, was completed in 1500. Two phases can be distinguished in it: the first one, including the section up to the top of the central rose window, features gargoyles and sided by two spires. The entrance portal is surrounded by a large arch with a wavy profile, in which is a relief with the Coronation of the Virgin in the presence of bishop Alonso de Burgos. The upper part of the façade features rectangular spaces up the summit tympanum. For its decoration were used some Gothic elements taken from other buildings and new ones, in the course of the renovation program funded by the Duke of Lerma, which also included the construction of the two side towers. The stars in the background refer to the coat of arms of the Sandoval y Rojas family, of which the Duke was a member; he is buried inside the church.