Columbia subject headings:
Architecture--Germany--History--18th century.
Architecture--Germany--History--19th century.
Architecture--Philosophy.
Germany--Buildings, structures, etc.
Harvard subject headings:
Aesthetics, German.
Architecture, Modern--18th century--Germany.
Architecture, Modern--19th century--Germany.
Architecture--Germany
Princeton subject headings:
Architecture--Germany--18th century.
Architecture--Germany--History--19th century.
Architecture--Philosophy.