Columbia subject headings:
Harvard subject headings:
Architecture, Medieval--Italy--Reggio Calabria.
Castello di Reggio Calabria (Reggio Calabria, Italy)
Castles--Italy--Reggio Calabria.
Fortification--Italy--Reggio Calabria.
Reggio di Calabria (Italy)--Buildings, structures, etc.
Reggio di Calabria (Italy)--History.
Princeton subject headings:
Architecture, Medieval--Italy--Reggio Calabria.
Castello di Reggio Calabria (Reggio Calabria, Italy)
Castles--Italy--Reggio Calabria.
Fortification--Italy--Reggio Calabria.
Reggio di Calabria (Italy)--Buildings, structures, etc.
Reggio di Calabria (Italy)--History.