Italy, Lazio, Rome, Trastevere, church of Santa Maria de Trastevere interior, mosaics in the apse.

Italy, Lazio, Rome, Trastevere, church of Santa Maria de Trastevere interior, mosaics in the apse.

Italy, Lazio, Rome, Esquiline Hill, Basilica of Santa Maria Maggiore, mosaic decorated apse.

Italy, Lazio, Rome, Esquiline Hill, Basilica of Santa Maria Maggiore, mosaic decorated apse.

Italy, Lazio, Rome, Esquiline Hill, Santa Prassede church, 9th Century mosaics in the apse.

Italy, Lazio, Rome, Esquiline Hill, Santa Prassede church, 9th Century mosaics in the apse.

Italy, Lazio, Rome, Esquiline Hill, Santa Prassede church, 9th Century mosaics in the apse.

Italy, Lazio, Rome, Esquiline Hill, Santa Prassede church, interior showing altar & apse.

Italy, Lazio, Rome, Esquiline Hill, Chucrh of Santa Prudenziana, apse mosaic detail.

Italy, Lazio, Rome, Basilica of San Clemente, apse with the Tree of Life mosaic.

Italy, Lazio, Rome, Basilica of San Clemente, apse with the tree of Life mosaic.

Italy, Lazio, Rome, Celian Hill, church of Santa Maria in Domnica, Byzantine mosaic in the apse.