Columbia subject headings:
Castles--Italy--Varese (Province)
Fortification--Italy--Varese (Province)
Varese (Italy : Province)--History, Local.
Harvard subject headings:
Castles--Italy--Varese (Province)
Fortification--Italy--Varese (Province)
Varese (Italy : Province)--Buildings, structures, etc.
Princeton subject headings:
Castles--Italy--Varese (Province).
Fortification--Italy--Varese (Province).
Varese (Italy : Province)--History, Local.