A Royal Castle
William the Conqueror began building Windsor Castle on a hill above the Thames 900 years ago. England's kings and queens have lived in it ever since. Parts of the castle were damaged in a fire in November 1992, but have been rebuilt.
Michael Vaughan-Rees, Geraldine Sweeney, Picot Cassidy: In Britain; Cornelsen Verlag, 2000, page 81