Columbia subject headings:
Harvard subject headings:
Cultural property--Protection--Spain--Catalonia.
Lost architecture--Spain--Catalonia.
Princeton subject headings:
Architecture--Spain--Catalonia--History.
Art--Spain--Catalonia.
Catalonia (Spain)--Antiquities.
Catalonia (Spain)--History.
City planning--Spain--Barcelona.
Cultural property--Protection--Spain--Catalonia.