Covering some 6,500m² (70,000ft²), the spectacular mosaic cycle of Monreale Cathedral in Sicily is one of the largest in the world. The mosaics were created in the 12th and 13th centuries by order of Norman King William II in the Byzantine style. While the nave and clerestory mosaics depict Old Testament stories, the side aisle walls, instead, depict New Testament stories. The entire program culminates in the apse of the great cathedral with a massive “Christ Pantocrator” image.