Portici della piazza di S. Pietro di Roma. Plate 44 from the Album 'Basilica di S. Pietro in Vaticano'; ca. 1656-67; Engraving; Sheet: 21 5/16 x 33 3/16 in. (54.2 x 84.3 cm); Giovanni Battista Bonacina (Italian; Milan 1620-ca. 1670); After Gian Lorenzo Bernini (Italian; Naples 1598-1680 Rome); Floor plans; aerial view and frontal view of the arcade in front of Saint Peter's Basilica in Rome. The aerial view shows that it concerns an earlier; not executed; stage of the plans in which the square would almost have been closed off completely by a third part of the arcade on the far side of the square