Columbia subject headings:
Lost architecture--Austria--Vienna.
Schönbrunn (Vienna, Austria)--History.
Vienna (Austria)--Buildings, structures, etc.
Harvard subject headings:
Lost architecture--Austria--Vienna.
Schönbrunn (Vienna, Austria)--History.
Vienna (Austria)--Buildings, structures, etc.
Princeton subject headings:
Castles--Austria--Vienna.
Historic buildings--Austria--Vienna.
Katterburg (Vienna, Austria)
Lost architecture--Austria--Vienna.
Palaces--Austria--Vienna.
Schönbrunn (Vienna, Austria)
Vienna (Austria)--Buildings, structures, etc.