Columbia subject headings:
Architecture--Rome--History.
Palaces--Italy--Rome.
Palazzo Caetani (Rome, Italy)
Rome--Civilization.
Rome--History.
Harvard subject headings:
Caetani family--Art collections.
Palazzo Caetani (Rome, Italy)
Rome (Italy)--Buildings, structures, etc.
Princeton subject headings:
Architecture--Rome--History.
Palaces--Italy--Rome.
Palazzo Caetani (Rome, Italy)
Rome--Civilization.
Rome--History.