Columbia subject headings:
Architecture--Italy--Rome.
Fountains--Italy--Rome.
Rome (Italy)--Description and travel.
Rome (Italy)--In art.
Harvard subject headings:
Architecture, Baroque--Italy--Rome--Themes, motives.
Rome (Italy)--Buildings, structures, etc.
Water and architecture--Italy--Rome.
Water in landscape architecture--Italy--Rome.
Water--Mythology
Princeton subject headings:
Architecture--Italy--Rome.
Fountains--Italy--Rome.
Rome (Italy)--Description and travel.
Rome (Italy)--In art.