Columbia subject headings:
Church architecture--Conservation and restoration--Italy--Rome.
Palaces--Conservation and restoration--Italy--Rome.
Rome (Italy)--Buildings, structures, etc.
Harvard subject headings:
Architecture--Italy--Rome--Conservation and restoration.
Historic buildings--Conservation and restoration--Italy--Rome.
Rome (Italy)--Buildings, structures, etc.--Conservation and restoration.
Princeton subject headings:
Church architecture--Italy--Rome--Conservation and restoration.
Palaces--Italy--Rome--Conservation and restoration.
Rome (Italy)--Buildings, structures, etc.