Columbia subject headings:
Harvard subject headings:
Architecture--Austria--Vienna--19th century.
Architecture--Austria--Vienna--20th century.
Architecture--Germany--Berlin--19th century.
Architecture--Germany--Berlin--20th century.
Princeton subject headings:
Architecture--Austria--Vienna--19th century.
Architecture--Austria--Vienna--20th century.
Architecture--Germany--Berlin--19th century.
Architecture--Germany--Berlin--History--20th century.
Berlin (Germany)--Buildings, structures, etc.
City planning--Austria--Vienna.
City planning--Germany--Berlin.
Vienna (Austria)--Buildings, structures, etc.