Columbia subject headings:
Arches--Greece--History.
Arches--Rome--History.
Architecture, Greek.
Architecture, Roman.
City planning--Greece--History.
City planning--Rome--History.
Harvard subject headings:
Arches--Italy--Rome--Catalogs.
Arches--Rome--History.
Architecture, Roman--Italy--Rome--Catalogs.
Cities and towns--Italy--Rome--Catalogs.
Rome (Italy)--Antiquities, Roman.
Rome (Italy)--Buildings, structures, etc.--Catalogs.
Princeton subject headings:
Arches--Greece--History.
Arches--Rome--History.
Architecture, Greek.
Architecture, Roman.
City planning--Greece--History.
City planning--Rome--History.