Columbia subject headings:
Architecture--Austria--History--21st century.
Architecture--Awards--Europe.
Architecture--Competitions--Europe.
Architecture--Germany--History--21st century.
Architecture--Switzerland--History--21st century.
Harvard subject headings:
Architecture--Austria--21st century.
Architecture--Awards--Europe
Architecture--Competitions--Europe.
Architecture--Germany--21st century.
Architecture--Switzerland--21st century.
Princeton subject headings: