Columbia subject headings:
Architecture, Medieval--Spain--Congresses.
Mansions--Spain--History--To 1500--Congresses.
Palaces--Spain--History--To 1500--Congresses.
Harvard subject headings:
Architecture, Medieval--Spain--Toledo--Congresses.
Architecture--Conservation and restoration--Spain--Toledo--Congresses.
Toledo (Spain)--Buildings, structures, etc.--Congresses.
Toledo (Spain)--History--Congresses.
Princeton subject headings: