San Vitale is most famous for its mosaics, which are the largest and best preserved Byzantine mosaics to be found anywhere outside of Constantinople. In the lunettes above the tryforia there is a series of mosaics depicting scenes from the Old Testament, including the stories of Abraham and Melchizedek, Abel and Cain, Moses and the Burning Bush and Jeremiah and Isaiah, representing the twelve tribes of Israel. Each lunette is crowned with an angel holding a medallion adorned with a cross. In the corners, by the mullioned windows, are the mosaic representations of the four Evangelists with their respective symbols, the angel, the lion, the ox and the eagle. Perhaps the two most famous mosaics, executed in 547, are those which can be seen at