Columbia subject headings:
Architecture--Italy--Palermo--History--21st century.
City planning--Italy--Palermo--History--21st century.
Urban beautification--Italy--Palermo.
Harvard subject headings:
Architecture--Italy--Palermo--History--21st century.
City planning--Italy--Palermo--History--21st century.
Urban beautification--Italy--Palermo.
Princeton subject headings:
Architecture--Italy--Palermo--History--21st century.
City planning--Italy--Palermo--History--21st century.
Urban beautification--Italy--Palermo.