The south door, _Los Leones_, is a particularly beautiful piece of Gothic work, of finished elegance and profusion of detail. Ponz describes the statues and ornaments as the most perfect of their kind. The portal forms a deep recess richly sculptured, full of delicate fancy in figure and leafage. The Assumption is by Salvatierra of the last century, inferior to the rest of the façade, and below it are two bas-reliefs with charming little figures representing scenes from the Old Testament. The six columns of the atrium, on which are seated six carved lions, give its name to the door. Each lion holds a shield. On the centre shields are repeated in bas-relief the eternal legend of Our Lady and St Ildefonso, while the four others show sculptural crosses and eagles. The bronze doors, attributed by Ponz to Berreguete, because they recall the work of his master, Michael Angelo, were wrought by Francisco Villalpando and Ruy Diaz del Corral in 1559, the carving having been done by the famous sculptor, Aleas Copin. Their great artistic work is sufficiently indicated by Ponz's error in attributing them to the magnificent genius of Berreguete. As a fact, many masters were engaged upon these bronze gates: Velasco, Troyas, Lebin, Cantala, the two Copins as well as Villalpando, and Diaz del Corral, the payment divided between all being 68,672 maravedis. It would seem that the supreme excellence of artistic achievement in those days was due to the modesty of remuneration, if we are to judge by the results of exorbitant payment to-day.