There is, properly speaking, no exterior elevation of the whole structure. The western front is hidden by the modernization, the north and south, by the new Cathedral, the cloisters, and squalid, encumbering walls and chapels. From the "Patio Chico" alone, the old structure can be seen unobstructed. The curves of the apses bulge out like full-bellied sails, their great masonry surfaces broken by the small windows, which are cut with enormous splays and encased and arched by typical Romanesque features, the windows protected by heavy Moorish grilles. Engaged shafts run up the sides of the central apse to below a quatrefoil gallery, originally a shelter for the archers stationed to defend the building. Two fortress-towers formed the eastern angles north and south; the one to the north was removed in building the new Cathedral. A scaled turret, broken by later Gothic pediments, crosses the one remaining. Above all soars the dome, the inspiration of our greatest American Romanesque temple, Trinity Church in Boston. At the end of the twelfth century the houses of a sacrilegious Salamanca gentleman were confiscated and given to the Cathedral Chapter, who forthwith began the cloisters upon their site. They lie to the south and thus came to be planned and built into the original fabric and with Romanesque arches and wooden roof. They were practically entirely rebuilt in the fifteenth century and again restored in the eighteenth. Curious, elaborate, vaulted chapels--in one of which the Mozarabic rite, the ancient Gothic ritual prolonged under Moslem rule, is still occasionally celebrated--adjoin it to the east and south. Recently, old Byzantine niches and tombs, some of great interest, have been uncovered in the outer walls. II