Columbia subject headings:
Architecture--Italy--Rome--History--19th century.
Architecture--Italy--Rome--History--20th century.
Art nouveau (Architecture)--Italy--Rome.
Harvard subject headings:
Architecture--Italy--Rome--19th century.
Architecture--Italy--Rome--20th century.
Art nouveau (Architecture)--Italy.
Facades--Italy--Rome.
Princeton subject headings:
Architecture--Italy--Rome--19th century.
Architecture--Italy--Rome--20th century.
Art nouveau (Architecture)--Italy--Rome.