Columbia subject headings:
Architects and patrons--Italy--Rome.
Architecture, Renaissance--Italy--Rome.
Architecture--Italy--Rome--History--17th century.
Architecture--Italy--Rome.
Popes.
Rome (Italy)--Buildings, structures, etc.
Harvard subject headings:
Princeton subject headings:
Art and state--Italy--Rome.
Christian art and symbolism--Italy--Rome.
Church architecture--Italy--Rome.
City planning--Italy--Rome.
Popes--Biography.