Columbia subject headings:
Castles--Latin Orient.
Church buildings--Latin Orient.
Harvard subject headings:
Architecture, Medieval--Latin Orient.
Castles--Latin Orient--History--To 1500.
Castles--Latin Orient.
Church buildings--Latin Orient--History--To 1500.
Church buildings--Latin Orient.
Crusades.
Princeton subject headings:
Architecture, Medieval--Latin Orient.
Castles--Latin Orient.
Church buildings--Latin Orient.
Crusades.