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1066 CE: William the Conqueror begins construction of Dover Castle in southern England.
1066 CE: The Normans introduce motte and bailey castles to Britain.
1067 CE - 1090 CE: The first Great Hall of Chepstow Castle is built.
1078 CE - 1100 CE: The White Tower of the Tower of London is built, a project begun by William the Conqueror.
1087 CE - 1089 CE: Construction of the first stone version of Rochester Castle in England.
1095 CE: William II of England builds the Great Hall at the Palace of Westminster.
1170 CE - 1189 CE: Henry II extends Dover Castle in southern England, adding outer walls and a keep.
1190 CE: Sir William Marshal begins rebuilding Chepstow Castle in Wales.
1207 CE - 1214 CE: King John adds towers to the walls of Dover Castle in southern England.
1222 CE - 1235 CE: The Great Hall of Winchester Castle is built.
1268 CE: Construction of Caerphilly Castle in Wales is begun by Gilbert de Clare, Earl of Gloucester.
1285 CE: A new Great Hall is completed at Chepstow Castle.
1295 CE: Beaumaris Castle in Wales is built by Edward I of England.
1341 CE: The Great Hall is built at Penshurst Castle, Kent, England.
1500 CE: James IV of Scotland adds a Great Hall, new kitchens and the Royal Chapel to Stirling Castle.
1510 CE: James IV of Scotland adds a new Great Hall to Edinburgh Castle.