battlement castle donjon dungeon fortification keep medieval middleage rampart ruin stone tower wall ancient architecture bedroom Bonaguil doorway dordogne fireplace France french historical old Remains ruins attraction culture fortress historic history landmark scotland scottish tourism bailey bank battlements grass monument motte mound Norman tourist walls york arch broken defend defensive England fort landscape military stronghold ancient history building Corfe Castle cottage Dorset english Great Britain Historic site home house mediaeval medieval architecture village line railway tracks transport