White Tower - the central tower of the Tower of London. Built by William the Conqueror.The white tower at nightThe fortress later became known as the Tower of London, it was founded by William the Conqueror in 1066.
White Tower has served as a military (mainly defensive) purposes, and as a residential building for the king and his courtiers; also it was a prison. Construction of the tower was completed at the latest by 1100, and that same year she became a prison Ranulf Flambard, the Bishop of Durham.
Approximately during the reign of Henry II (1154-1189) to the south wall of the White Tower in order to provide additional protection extension has been added to the gate, but to this day has not been preserved.
Henry III in 1220-x-1230-ies. also strengthened the defense of the White Tower and around the Tower. He expanded the Tower in the north and east, and built a new stone wall