Columbia subject headings:
Harvard subject headings:
Architecture, Medieval--Italy--Volterra.
Architecture--Conservation and restoration--Italy--Volterra.
Palazzo e piazza dei priori (Volterra, Italy)
Volterra (Italy)--Buildings, structures, etc.
Princeton subject headings:
Architecture, Medieval--Italy--Volterra.
Palazzo e piazza dei priori (Volterra, Italy)--History.
Public buildings--Italy--Volterra.
Volterra (Italy)--Buildings, structures, etc.--Conservation and restoration.