Columbia subject headings:
Harvard subject headings:
Historic gardens--Italy--Tivoli.
Tivoli (Italy)--Buildings, structures, etc.
Villa d'Este (Tivoli, Italy)
Princeton subject headings:
Architecture, Domestic--Italy--Tivoli--Guidebooks.
Art, Italian--Italy--Tivoli--Guidebooks.
Guidebooks.
Historic gardens--Italy--Tivoli--Guidebooks.
Villa d'Este (Tivoli, Italy)--Guidebooks.