Columbia subject headings:
Architecture, Norman--Italy--Sicily--Arab influences.
Architecture, Renaissance--Italy--Sicily.
Architecture--Italy--Sicily.
Harvard subject headings:
Architecture, Norman--Italy--Sicily--Arab influences.
Architecture, Renaissance--Italy--Sicily.
Architecture--Italy--Sicily.
Princeton subject headings:
Architecture, Norman--Italy--Sicily--Arab influences.
Architecture, Renaissance--Italy--Sicily.
Architecture--Italy--Sicily.