Columbia subject headings:
Alcázar (Madrid, Spain)
Chapels--Spain--Madrid--History.
Madrid (Spain)--Church history.
Harvard subject headings:
Alcázar (Madrid, Spain)
Chapels--Spain--Madrid--History.
Madrid (Spain)--Church history.
Princeton subject headings:
Alcazar (Madrid, Spain)
Chapels--Spain--Madrid--History.
Madrid (Spain)--Church history.