Columbia subject headings:
Architecture, Medieval--Italy--Syracuse.
Castello di Maniace (Syracuse, Italy)
Castles--Italy--Syracuse.
Fortification--Italy--Syracuse.
Syracuse (Italy)--Buildings, structures, etc.
Harvard subject headings:
Architecture, Medieval--Italy--Syracuse.
Castello Maniace (Syracuse, Italy)
Castles--Conservation and restoration--Italy--Syracuse.
Castles--Italy--Syracuse.
Fortification--Italy--Syracuse.
Syracuse (Italy)--Buildings, structures, etc.
Princeton subject headings:
Architecture, Medieval--Italy--Syracuse.
Castello Maniace (Syracuse, Italy)
Castles--Conservation and restoration--Italy--Syracuse.
Castles--Italy--Syracuse.
Fortification--Italy--Syracuse.
Syracuse (Italy)--Buildings, structures, etc.