In 1169, Anglo-Norman lords invaded Ireland. They were led by Strongbow who landed at Passage East, Co. Waterford. The Anglo-Normans conquered many parts of Ireland in the following 60 years. They introduced their way of life to the Irish people. The feudal system was soon introduced in Ireland as a means of organising land. Castles were built to defend the land like Trim Castle, Co. Meath. During the Middle Ages, Ireland's first proper towns were built.