The Tower of London is by far one of the most famous and well preserved historical buildings in the world. From its earliest structural beginnings by its founder William I of England better known as William the Conqueror 1066-87, the Great Tower or White Tower as it later came to be called was fast becoming the most talked-about building in England. The White Tower was also the most awe inspiring, and frightening structure to the Anglo-Saxon people who were trying to get used to the rule of their new Norman king, the destroyer of their own ruler, Harold II, at the in 1066. Within three months of his victory William the Conqueror had begun to build a castle on the north bank of the river Thames in London.