books.google.com - The widespread construction of castles in Britain began as soon as Duke William of Normandy set foot on the shores of southern England in 1066. The castles that were constructed in the ensuing centuries, and whose ruins still scatter the British countryside today, provide us with an enduring record of...http://books.google.com/books/about/Britain_s_medieval_castles.html?id=fBbNJLEWiLIC&utm_source=gb-gplus-shareBritain's medieval castles
