Castles are key to the success of the socio-political structure brought by the Norman Conquest

Surges in castle building are driven by both bad and good Government

Castles feature in some myths, and the doing of Dirty Deeds during a prolonged power struggle

Religious strife replaces armed usurpation - Castles lose importance and the wealthy build for both comfort and visible status

After a brief return to glory, many Castles are ruined, giving way to Palaces and Stately Houses

Castles and Stately Houses provide 'atmosphere' for major movies