DS has recently started to enjoy building models. He has done quite a few landmarks such as Big Ben, Statue of Liberty etc. He wants to do a castle but he wants it to be a model of an actual castle that exists not a make believe castle. The kits he has been using are either cardboard that you have to fold and slot together or the Ravensburger style 3d jigsaw but I cant seem to find a real life castle. Anyone got any ideas?