The Virgin Mary enthroned with the Christ child in her lap and flanked by four angels. She wears a veiled mantle, or maphorion, royal purple in color. A small white cross is woven into her veil.
S. Apollinare Nuovo, #Ravenna, early 6th cent. (partially restored)
This is my most viewed image on Fickr. A pov shot looking up towards the dome in the sanctuary of San Vitale in #Ravenna. Gives a good sense of the mosaic program. Over 11K views!