Columbia subject headings:
Architecture, Domestic--Portugal--History--21st century--Designs and plans.
Architecture, Domestic--Portugal--History--21st century.
Harvard subject headings:
Architecture, Domestic--Portugal
Architecture--Portugal--21st century--Designs and plans.
Princeton subject headings:
Architecture, Domestic--Portugal--History--21st century--Designs and plans.
Architecture, Domestic--Portugal--History--21st century.