Columbia subject headings:
Harvard subject headings:
Campiglia Marittima (Italy)--Buildings, structures, etc.
Fortification--Italy--Campiglia Marittima--History.
Historic buildings--Conservation and restoration--Italy.
Military architecture--Italy.
Rocca di Campiglia Marittima (Campiglia Marittima, Italy)--Conservation and restoration.
Princeton subject headings:
Fortification--Italy--Campiglia Marittima.
Rocca San Silvestro (Campiglia Marittima, Italy)