The Cathedral is situated on the eastern side of the Plaza Mayor. The foundation stone was laid by Pizarro himself on the 18th of January, 1534, twelve days after the choice of the site of the city. Ninety years after, the edifice was completed, and was solemnly dedicated on the 19th of October, 1625. It has a light, ornamented façade with large folding doors in the centre, and smaller ones upon each side. From each of the two corners rises an octagonal tower to the height of about two hundred feet, exclusive of the base, which is forty feet. These towers were thrown down by the great earthquake of 1746, by which almost the whole city was laid in ruins. They were rebuilt in 1800. The interior is singularly magnificent. The roof, which is beautifully paneled, rests upon arches supported by a double row of square stone pillars. The grand altar is adorned with seven Ionic columns, twelve feet in height, cased with pure silver, an inch and a half thick, and is surmounted with a massy crown of silver richly gilt. The tabernacle, seven feet high, is of wrought gold, studded with precious stones. On high festival days service is performed with a pomp and splendor not surpassed in any temple in Christendom. Many of the churches are ornamented with a profusion of silver even yet, though it is said that during the revolution a ton and a half of silver was taken in a single year from the ornaments of the churches, to supply the necessities of the state; yet such was the abundance with which the precious metal had been lavished, that this amount was hardly missed; a tale which would be incredible if related of any city other than the one which at a certain time paved with solid ingots of silver the streets through which a new viceroy was to make his entrance. In the convent of San Francisco, is a small chapel containing an image of the Virgin, called _del milagro_, "of the miracle." It is related that during the great earthquake of 1630, this image, which then stood over the porch of the church looking toward the street, turned completely round, so as to face the high altar, and raised her hands in the attitude of supplication, and then implored mercy for the city, and thus saved it from utter destruction. A monk who conducted a recent traveler over the convent, related to him this miracle, and very naïvely expressed his wonder that the Madonna did not repeat her gracious interposition at the time of the earthquake of 1746, when it was no less needed.