Columbia subject headings:
Architecture and society--Germany.
Architecture--Germany--History--19th century.
Architecture--Germany--History--20th century.
Palaces--Germany.
Harvard subject headings:
Architecture, Modern--19th century--Europe.
Architecture, Modern--20th century--Europe.
Castles--Europe
Palaces--Europe
Public buildings--Europe.
Princeton subject headings:
Architecture and society--Germany.
Architecture, Modern--19th century--Germany.
Architecture, Modern--20th century--Germany.
Palaces--Germany.