Columbia subject headings:
Architecture--Austria--Vienna--History--19th century.
Architecture--Austria--Vienna.
Neoclassicism (Architecture)--Austria--Vienna.
Ringstrasse (Vienna, Austria)
Vienna (Austria)--Buildings, structures, etc.
Vienna (Austria)--Social life and customs.
Harvard subject headings:
Architecture--Austria--History--19th century.
Architecture--Austria--Vienna
Ringstrasse (Vienna, Austria)
Vienna (Austria)--Buildings, structures, etc.
Vienna (Austria)--History--19th century.
Princeton subject headings: