Columbia subject headings:
Architecture--Spain--Barcelona--History--21st century--Pictorial works.
Harvard subject headings:
Architecture--Spain--Barcelona--20th century--Pictorial works.
Architecture--Spain--Barcelona--21st century--Pictorial works.
Barcelona (Spain)--Buildings, structures, etc.--Pictorial works.
Princeton subject headings:
Architecture--Spain--Barcelona--21st century--Pictorial works.
Decoration and ornament, Architectural--Spain--Barcelona--21st century--Pictorial works.