Columbia subject headings:
Harvard subject headings:
Architectural photography--Portugal--Viana do Castelo.
Architecture--Portugal--Viana do Castelo--History.
Modern movement (Architecture)--Portugal--Viana do Castelo.
Viana do Castelo (Portugal)--Buildings, structures, etc.
Princeton subject headings:
Architectural photography--Portugal--Viana do Castelo.
Architecture--Portugal--Viana do Castelo--History--20th century.
Architecture--Portugal--Viana do Castelo--History--21st century.
Modern movement (Architecture)--Portugal--Viana do Castelo.
Viana do Castelo (Portugal)--Buildings, structures, etc.