Columbia subject headings:
Castles--Belgium--Hainaut.
Harvard subject headings:
Architecture, Medieval--Belgium--Hainaut--Exhibitions.
Art, Medieval--Belgium--Hainaut--Exhibitions.
Castles in heraldry--Belgium--Hainaut--Exhibitions.
Castles--Belgium--Hainaut--Exhibitions.
Hainaut (Belgium)--History--Exhibitions.
Princeton subject headings:
Architecture, Medieval--Belgium--Hainaut--Exhibitions.
Art, Medieval--Belgium--Hainaut--Exhibitions.
Castles in art--Belgium--Hainaut--Exhibitions.
Castles--Belgium--Hainaut--Exhibitions.
Hainaut (Belgium)--History--Exhibitions.
Knights and knighthood in art--Belgium--Hainaut--Exhibitions.