Columbia subject headings:
Architecture, Domestic--Italy--Tuscany.
Architecture, Medieval--Italy--Tuscany.
Dwellings--Italy--Tuscany.
Tuscany (Italy)--History.
Harvard subject headings:
Architecture, Domestic--Italy--Tuscany.
Architecture, Medieval--Italy--Tuscany.
Dwellings--Italy--Tuscany.
Towers--Italy--Tuscany.
Princeton subject headings:
Architecture, Domestic--Italy--Tuscany.
Architecture, Medieval--Italy--Tuscany.
Dwellings--Italy--Tuscany.
Towers--Italy--Tuscany.
Tuscany (Italy)--Buildings, structures, etc.