CORDOBA: The famed forest of pillars inside the great Mosque of Corcoba (La Mezquita), used classical pillars of various designs and heights, so their bases and capitals were adjusted to hold up arches of uniform heights. The arches themselves are built of alternating strips of stone and brick (though in the latest hasty addition to the building the red stripes were merely painted on). The capitals differ greatly in design from one another to keep the arches at the same level with each other. Begun in the 10th century.