Columbia subject headings:
Landscape protection--Italy--Ariccia.
Palaces--Conservation and restoration--Italy--Ariccia.
Palazzo Chigi (Ariccia, Italy)
Parco Chigi (Ariccia, Italy)
Parks--Italy--Ariccia.
Harvard subject headings:
Architecture, Domestic--Conservation and restoration--Italy--Ariccia.
Palazzo Chigi (Ariccia, Italy)
Parco Chigi (Ariccia, Italy)
Parks--Conservation and restoration--Italy--Ariccia.
Princeton subject headings:
Palazzo Chigi (Ariccia, Italy)
Parco Chigi (Ariccia, Italy)