Columbia subject headings:
Arches--Italy--Rome.
Curiosities and wonders--Italy--Rome.
Rome (Italy)--Buildings, structures, etc.
Harvard subject headings:
Arches--Italy--Rome.
Curiosities and wonders--Italy--Rome.
Rome (Italy)--Buildings, structures, etc.
Princeton subject headings:
Arches--Italy--Rome.
Rome (Italy)--Buildings, structures, etc.