Apse Mosaic
The apse above the choir is decorated with a fine 9th-century mosaic. It depicts a standing figure of Christ, flanked by Pope Paschal I, St. Agatha, and St. Paul on the left and St. Peter, St. Valerian and St. Cecilia on the right. Below the figures are twelve sheep, the Lamb of God, and a lengthy dedicatory inscription from Paschal I.
Credit: Holly Hayes