Columbia subject headings:
Fortification--Italy--Sicily--History.
Ventimiglia family--History.
Ventimiglia family--Homes and haunts--Italy--Sicily.
Harvard subject headings:
Castles--Italy--Sicily.
Feudalism--Italy--Sicily.
Nobility--Italy--Sicily--History.
Sicily (Italy)--Buildings, structures, etc.
Sicily (Italy)--History
Ventimiglia family--Homes and haunts--Italy--Sicily.
Princeton subject headings:
Architecture, Medieval--Italy--Sicily.
Fortification--Italy--Sicily--History.
Ventimiglia family--Homes and haunts--Italy--Sicily.