Columbia subject headings:
Architecture, Baroque--Italy.
Architecture, Baroque.
Art--Rome.
Basilica di San Pietro in Vaticano.
Urban VIII, Pope, 1568-1644.
Harvard subject headings:
Architecture--Italy--Rome--History--Sources.
Art, Baroque--Italy--Rome--History--Sources.
Urban VIII, Pope, 1568-1644--Art patronage.
Princeton subject headings:
Architecture--Italy--Rome--History--Sources.
Art, Baroque--Italy--Rome--History--Sources.
Urban VIII, Pope, 1568-1644--Art patronage.