Archbishop's Chapel, Ravenna

The Archbishop's Chapel is a chapel on the first floor of the bishops' palace in Ravenna, Italy, the smallest of the famous mosaic sites of the city. It is a private oratory of Trinitarian bishops dating from the turn of the 6th century. Although commonly attributed to St. Peter Chrysologus, Archbishop of Ravenna from 433–450, the chapel was actually built by Peter II shortly after he became archbishop in 495. The mosaics date from the original construction, or soon after.

Source: Wikipedia