Columbia subject headings:
Architecture, German--Rhine River Valley.
Architecture--Rhine River Valley--History--19th century.
Architecture--Rhine River Valley.
Art, German--Rhine River Valley--19th century.
Art, German--Rhine River Valley.
Art--Rhine River Valley.
Harvard subject headings:
Princeton subject headings:
Art, German--Germany, West--Rhine Valley.
Art, Modern--19th century--Germany, West--Rhine Valley.
Art--Germany, West--Rhine Valley.