Columbia subject headings:
Baden (Germany)--Description and travel.
Baden (Germany)--History.
Castles--Germany--Baden--History.
Harvard subject headings:
Baden (Germany)--Description and travel.
Baden (Germany)--History.
Castles--Germany--Baden--History.
Princeton subject headings:
Baden (Germany)--Description and travel.
Baden (Germany)--History.
Castles--Germany (West)--Baden--History.