Columbia subject headings:
Architecture, Baroque--Italy--Palermo.
City planning--Italy--Palermo--History--17th century.
Harvard subject headings:
Architecture, Baroque--Italy--Palermo.
City planning--Italy--Palermo.
Palermo (Italy)--Buildings, structures, etc.
Princeton subject headings:
Architecture, Baroque--Italy--Palermo.
City planning--Italy--Palermo--History--17th century.