1-155-895 - Ann Ronan Picture Library/Heritage-Images

Baptistry of St John, Florence, Italy. The Baptistry of St John (Battistero di San Giovanni) is thought to be the oldest building in Florence, dating from the 6th or 7th century. The basilica's interior has magnificent ceiling mosaics produced in the 13th century, which depict scenes of the Last Judgement, Genesis and the stories of John the Baptist and Joseph.