Columbia subject headings:
Architecture--Conservation and restoration--Portugal--Portalegre (District)
Historic buildings--Conservation and restoration--Portugal--Portalegre (District)
Urban renewal--Portugal--Portalegre (District)
Harvard subject headings:
Architecture--Conservation and restoration--Portugal--Portalegre (District)
Historic buildings--Conservation and restoration--Portugal--Portalegre (District)
Urban renewal--Portugal--Portalegre (District)
Princeton subject headings: