Columbia subject headings:
Architecture, Domestic--Italy--Piacenza.
Architecture--Italy--Piacenza--History--17th century.
Piacenza (Italy)--History.
Harvard subject headings:
Architecture, Domestic--Italy--Piacenza (Province)
Country homes--Italy--Piacenza (Province)--Pictorial works.
Decoration and ornament--Italy--Piacenza (Province)--Pictorial works.
Piacenza (Italy : Province)--Civilization.
Princeton subject headings: