The crossing is splendidly broad, the transepts appearing, as one glances north and south, as much the main arms of the cross as do the nave and choir. The southern arm is quite new, having been completely rebuilt by D. Juan Madrazo and D. Demetrio Amador de los Rios. The glazing of its window and the arabesques cannot be compared to those of the original fabric in the northern arm. The four piers of the crossing, though slender and graceful, carry full, logical complements of shafts for the support of the various vaulting ribs, intersecting at their apexes. The retablo above the high altar is in its simplicity as refreshing as the light and sunniness of the church. In place of the customary gaudy carving, it merely consists of a series of painted fifteenth-century tablets set in Gothic frames. Simple rejas close the western bays and a florid Gothic trasaltar, the eastern termination. Directly back of the altar lies a noble and dignified figure, the founder of the church, King Ordoño II. At his feet is a little dog, looking for all the world like a sucking pig in a butcher's window. And above him is an ancient and most curious Byzantine relief of the Crucifixion. The lions and castles of his kingdom surround the old king. The greater portion of the carving must belong to the oldest in the church. In looking at the vaulting and considering the difficulty of planning the "girola" or ambulatory, one realizes that such construction could only be the outcome of many years of study, experiment and inspiration. Perfection means long previous schooling and experience. The apsidal chapels that radiate from it have glass differing in excellence. Here and there frescoes of the thirteenth century line these earliest walls. It is surprising in how many different places old sepulchres are to be found, all more or less similar in their general design and belonging to the period of transition from the Byzantine to the Gothic, yet each denoting the building period of the place where it stands. Some of the subjects of the carving are most curious: a hog playing the bagpipes, the devil in the garb of a father confessor, tempting a penitent; or again, a woman suckling an ass. Saint Froila lies on one side of the altar. Not only his sanctity but even his authenticity were disputed by various disbelievers in the city, prior to his being brought to this final resting-place. The matter was decided by placing the body in question on an ass's back, whereupon the sagacious animal took his holy burden to the spot where it deserved burial. In the Capilla de Nuestra Señora del Dado, or "of the die," stands a Virgin with the face of the Christ child ever bleeding, it is said, since the time when an unlucky gambler in a fit of despair threw his dice against the Babe.