ocr: Slide Shows Original Song written specially for this CD Experience 360'x360 images Look Full and Virtual Narration Tours Left and Up, Right Down, Fully Interactive Map Castles have been part of Ireland since the Anglo-Norman knights invaded Ireland. In the beginning of the arts of war, the. Anglo-Normans realised that they needed to build permanent and defensible fortresses if they wanted to keep control of Ireland. Whenever possible castles were built on land where there were natural defences and a wide view. In general, castles were built primarily for defensive purposes, with moats and draw ...