Altogether the impression which is first given here is of a church which has been completely altered by Renaissance architects of rather a more picturesque turn of mind than is usual; and the generally similar character of the work in the Plazas on the several sides of the church gives certainly a rather stately, though to me it was a very disappointing, _tout ensemble_. With such feelings about the exterior, the complete change in the character of the work as one goes through the door is more than usually striking, for you are at once transferred from what is all modern, to what is almost all very old, uniform, and but little disturbed. The interior of the transepts is very impressive; their length is not far from equal to that of the nave, and the view is less interrupted than in it, as the rails between the Coro and the Capilla mayor are very light, and the stalls are all to the west of the crossing. The whole detail of the design is extremely simple. The piers are alternated throughout the church of the two sections given on my ground-plan. The capitals are all carved, generally with foliage, but sometimes with pairs of birds and beasts. Engaged columns run up from the floor to the vault, and carry transverse ribs or arches below the great waggon-vault. The triforium opens to the nave with a round arch, subdivided with two arches, carried on a detached shaft. I have already described the construction, and I need only add here that the buttresses, which appear on the ground-plan, are all connected by arches thrown from one to the other, so that the eaves of the roof project in front of their outside face. There is consequently an enormous thickness of wall to resist the weight and thrust of the continuous vault of the triforium, these arches between the buttresses having been contrived in order to render the whole wall as rigid and uniform in its resistance to the thrust as possible. The height of the interior, from the floor to the centre of the barrel-vault of the nave, is a little over seventy feet. This dimension is, of course, insignificant if compared with the height of many later churches; but it must be borne in mind that here there is no clerestory, and that, owing to its absence, there is much less light in the upper part of the church than is usual, and one consequence of this partial gloom is a great apparent increase in the size of every part of the building. The original windows remain throughout the greater part of the church. In the aisles they have jamb-shafts inside, and in both aisles and triforia there are jamb-shafts outside. Occasionally at the angles of the aisles, and elsewhere where it was impossible to pierce the walls for windows, sunk arcading, corresponding with them in outline and detail, is substituted for them.