Columbia subject headings:
Architecture--Italy--Castelli Romani.
Fontana, Carlo, 1634-1714.
Harvard subject headings:
Castelli Romani (Italy)--Buildings, structures, etc.--Early works to 1800.
Castles--Italy--Castelli Romani--Early works to 1800.
Fontana, Carlo, 1634-1714--Criticism and interpretation.
Princeton subject headings:
Architecture--Italy--Castelli Romani.
Fontana, Carlo, 1634-1714.