Columbia subject headings:
Modena (Italy)--Buildings, structures, etc.
Torre Ghirlandina (Modena, Italy)
Towers--Conservation and restoration--Italy--Modena.
Harvard subject headings:
Princeton subject headings:
Modena (Italy)--Buildings, structures, etc.
Torre Ghirlandina (Modena, Italy)
Towers--Conservation and restoration--Italy--Modena.