Columbia subject headings:
Castles--Italy--Lodi (Province)
Fortification--Italy--Lodi (Province)
Lodi (Italy : Province)--Buildings, structures, etc.
Harvard subject headings:
Architecture--Italy--Lombardy.
Castles--Italy--Lombardy--History.
Princeton subject headings:
Castles--Italy--Lodi (Province).
Fortification--Italy--Lodi (Province).
Lodi (Italy : Province)--Buildings, structures, etc.