Now lift your eyes. The chapel is covered in gold mosaic made by Byzantine craftsmen. High in the dome, a majestic Christ Pantocrator presides, surrounded by angels and archangels. Around you, countless tiny gold tesserae seem to hold the light and hand it back. The work was not finished in a single reign. The decoration stretched over about 50 years. Roger the Second's era brought the classic Byzantine imagery, much like the cathedral at Cefalù. His successor, William the First, is credited with the mosaics of the central nave, the cycle of Genesis. William the Second, the builder of Monreale Cathedral, is credited with the side aisles. There, the mosaic technique begins to tell stories of events and history, not only sacred icons. The Russian architect Alexander Pomerantsev took this wealth of images seriously. He produced drawings of 172 mosaic scenes, together with extensive documentation of the carved and painted wooden ceiling, and the work earned him the title of academician of architecture in 1887. Look down as well. The floor is a mosaic of repeating patterns, with an especially rich geometric design at the foot of the dome, clearly Byzantine in inspiration.