Columbia subject headings:
Architecture--Austria--Baden--History--19th century.
Baden (Austria)--Buildings, structures, etc.
Villa Hahn (Baden, Austria)
Wagner, Otto, 1841-1918.
Harvard subject headings:
Architecture, Modern--19th century--Austria--Baden.
Architecture--Austria--Baden--History--19th century.
Architecture--Austria--Baden--History.
Baden (Austria)--Buildings, structures, etc.
Mansions--Austria--Baden.
Wagner, Otto, 1841-1918--Criticism and interpretation.
Princeton subject headings:
Architecture--Austria--Baden--19th century.
Baden (Austria)--Buildings, structures, etc.
Villa Hahn (Baden, Austria)
Wagner, Otto, 1841-1918.