Stock Photo: Chapel of the Princes at the San Lorenzo Church in Florence, by Giovanni de' Medici, Nigetti Matteo, 1604, 17th Century, dark marble, semi, precious stones, mother, of, pearl, lapis lazuli and coral. Italy: Tuscany: Florence: San Lorenzo basilica: Medici Chapel. Internal view chapel Principi San Lorenzo Florence octagonal space dome inlay spectacular effect wainscot coat-of-arms 16 Tuscan towns loyal Medici family alcoves atrium altar sarcophagi hidden rooms crypts