Columbia subject headings:
Barcelona (Spain)--Buildings, structures, etc.
Gaudí, Antoni, 1852-1926.
Harvard subject headings:
Architects--Spain.
Architecture--Spain--Barcelona--19th century.
Architecture--Spain--Barcelona--20th century.
Barcelona (Spain)--Buildings, structures, etc.
Gaudí, Antoni, 1852-1926--Criticism and interpretation.
Princeton subject headings:
Barcelona (Spain)--Buildings, structures, etc.
Gaudí, Antoni, 1852-1926.