Ducal Palace: vault of the “Bridal Chamber or Camera Picta", which is a room located in the north-east tower of the Castle of San Giorgio in Mantua. It is famous for the cycle of frescoes that covers its walls, a masterpiece by Andrea Mantegna, created between 1465 and 1474.Detail of the vault: lozenge with a golden background that encloses a circular garland which in turn encloses the portrait of the Roman emperor “Caligula”. The garland is supported by a putto.