Belgium
www.dreamit.be/castles
www.heartofeurope.com/castles.html#belgium
www.bc.edu
www.familycastles.com/castlecntry/belgium.html
Czech republic(9) Slovakia(3) Poland(6) Germany(7) Austria(4) France(4) Great Britain(3) Portugal(3) Italy(3) Luxemburg(1) Ireland(3) Hungary(2) Switzerland(3) Roumania(3)