Columbia subject headings:
Architecture--Austria--Vienna.
Hof-Operntheater (Vienna, Austria)
Justizpalast (Vienna, Austria)
Reichsrat (Vienna, Austria: Buildings)
Universität Wien (Building)
Votivkirche (Vienna, Austria)
Harvard subject headings:
Princeton subject headings:
Architecture--Austria--Vienna.
Austria. Reichsrat--Buildings.
Justizpalast (Vienna, Austria)
Operntheater (Vienna, Austria).
Universität Wien--Buildings.
Votivkirche (Vienna, Austria).