Columbia subject headings:
Architecture, Medieval--Europe.
Castles--Austria.
Castles--Germany.
Castles--Switzerland.
Chapels--Austria.
Chapels--Germany.
Chapels--Switzerland.
Harvard subject headings:
Architecture, Medieval--Europe.
Castles--Austria
Castles--Germany
Castles--Switzerland
Chapels--Austria.
Chapels--Germany.
Chapels--Switzerland.
Princeton subject headings:
Architecture, Medieval--Europe.
Castles--Austria.
Castles--Germany.
Castles--Switzerland.
Chapels--Austria.
Chapels--Germany.
Chapels--Switzerland.