various Mosaics. 1. roman floor from 5th century, 2. roman mosaic from the time of the emperors, 3. part of San Clemente, Rome, 12th century, 4. Hagia Sophia Istanbul, 5. from the castle of Windsor, 19th century, 6. from the altar of San Domenico, Messina, 7. from the San Marco church, Venezia, digital improved reproduction of an original print from the year 1895