Columbia subject headings:
Maritime Theater (Hadrian's Villa, Tivoli, Italy)
Tivoli (Italy)--Antiquities, Roman.
Harvard subject headings:
Hadrian, Emperor of Rome, 76-138--Homes and haunts--Italy--Tivoli.
Maritime Theater (Hadrian's Villa, Tivoli, Italy)
Palaces--Italy--Tivoli.
Theater architecture--Italy--Tivoli.
Theaters--Italy--Tivoli.
Tivoli (Italy)--Antiquities, Roman.
Tivoli (Italy)--Buildings, structures, etc.
Princeton subject headings:
Maritime Theater (Hadrian's Villa, Tivoli, Italy)
Tivoli (Italy)--Antiquities, Roman.