Columbia subject headings:
Castles--Italy--Venice--History.
Fortification--Adriatic Sea Region--History.
Fortification--Italy--Venice--History.
Fortification--Mediterranean Region--History.
Venice (Italy)--History--1508-1797.
Harvard subject headings:
Fortification--Italy--Venice--History.
Venice (Italy)--Defenses.
Venice (Italy)--History--1508-1797.
Princeton subject headings:
Castles--Italy--Venice.
Fortification--Adriatic Sea Region.
Fortification--Italy--Venice.
Fortification--Mediterranean Region.
Venice (Italy)--History--1508-1797.