Columbia subject headings:
Harvard subject headings:
Architecture--Spain--Barcelona.
Barcelona (Spain)--Buildings, structures, etc.
City planning--Spain--Barcelona--History.
Tibidabo (Barcelona, Spain)--History.
Princeton subject headings:
Architecture--Spain--Barcelona.
Barcelona (Spain)--Buildings, structures, etc.
City planning--Spain--Barcelona--History.
Tibidabo (Barcelona, Spain)--History.