Columbia subject headings:
Architecture, Medieval--Italy--Genazzano--Exhibitions.
Castello Colonna (Genazzano, Italy)
Castles--Conservation and restoration--Italy--Genazzano--Exhibitions.
Castles--Italy--Genazzano--Designs and plans--Exhibitions.
Genazzano (Italy)--Buildings, structures, etc.
Harvard subject headings:
Architecture, Medieval--Italy--Genazzano--Exhibitions.
Castello Colonna (Genazzano, Italy)
Castles--Conservation and restoration--Italy--Genazzano--Exhibitions.
Castles--Italy--Genazzano--Conservation and restoration--Exhibitions.
Castles--Italy--Genazzano--Designs and plans--Exhibitions.
Genazzano (Italy)--Buildings, structures, etc.
Princeton subject headings:
Architecture--Conservation and restoration.
Castello Colonna (Genazzano, Italy)
Castles--Italy--Genazzano.
City planning--Italy--Genazzano.