Considering the B & B Ma & Mi in Cefalú?
A VT member wrote the following comment about visiting Cefalú:
Cathedral Triumphal Arch by hquittner
The mosaics are few, compared to Monreale, but there are Martyrs and Saints on the side walls of the Altar area. Besides these full figured mosaics, if you look upward in this area to the Arch you will see another Christ figure and surrounding seraphims with their colorful six wings.