In 1506, under the archbishops Alfonso Rodriguez and Gonzalo de Rojas, the building was completed. For a century the work had been carried on with such reckless haste that inferior building methods had been employed, which led to subsequent disasters. On December 28, 1511, to the consternation of the devout workmen, the great central dome fell in during an earthquake, carrying with it or weakening many of the vaults and much of the masonry below. After the earthquake, some of the large piers supporting the great crossing as well as the adjacent ones were found filled with the most carelessly laid rubble and earth, with no carrying power nor resistance. About 1520 the building might in the main be said to be finished. Externally it has never been completed, although in the nineteenth century the west front was finished and its central doorway ornamented. An extensive restoration which took place in 1882 was interrupted by the second earthquake of 1888, during which the dome again fell in. To-day it is all rebuilt. The entrance is at the west end. The plan, as I have said, was governed by the old basilica-shaped mosque. The transepts do not project beyond the chapels of the side aisles, and at the east end it differs from most Spanish churches in having a square termination instead of an apse. Also along the east wall chapels have been built between the buttresses similar to those between the north and south sides. The central portions of the east end open into the great Capilla Real. There are nine doorways to the church. In studying the plan, it is interesting to note what Mr. Ferguson has indicated, that similarly to what is found in the Indian Jain temples, the diagonal of the aisle compartments has the same length as the width of the nave. The original documents and accounts of the church, which have disappeared, were probably burnt among Philip II's papers destroyed by the great Madrid fire.