The principal entrance to the mosque is the Puerta del Perdón, (The Gate of Forgiveness), a Mudejar style portal from the 14th century located on the north side of the Mezquita. This is one of the most important doors in the ceremonial life of the Cathedral as it sees the passing of some of the most important religious solemnities. Completed in the year 1377, it has since undergone various reforms, such as that of 1650 by the architect Sebastián Vidal. On it we can see the remains of some mural paintings which, attributed to Antonio del Castillo, represent Our Lady of the Assumption, flanked by Saint Michel and Saint Raphael.