Columbia subject headings:
Architecture--Italy--Perugia.
Buildings--Remodeling for other use--Italy--Perugia.
Perugia (Italy)--Buildings, structures, etc.
Prisons--Italy--Perugia.
Harvard subject headings:
Architecture--Italy--Perugia.
Buildings--Remodeling for other use--Italy--Perugia.
Perugia (Italy)--Buildings, structures, etc.
Prisons--Italy--Perugia.
Princeton subject headings:
Architecture--Italy--Perugia.
Buildings--Remodeling for other use--Italy--Perugia.
Perugia (Italy)--Buildings, structures, etc.
Prisons--Italy--Perugia.