Columbia subject headings:
Architecture--Italy--Sicily--History--21st century--Designs and plans.
City planning--Italy--Sicily--History--21st century.
Harvard subject headings:
Architecture--Italy--Sicily--History--21st century--Designs and plans.
City planning--Italy--Sicily--History--21st century.
Princeton subject headings:
Architecture--Italy--Sicily--History--21st century--Designs and plans.
City planning--Italy--Sicily--History--21st century.