what was it used for?
As a royal residence as well as a prison.
Tower of London
The castle was also used as a prison from 1100 (Ranulf Flambard) until 1952 (Kray twins), although that was not its primary purpose. A grand palace early in its history, it served as a royal residence. A
when was the foundation laid for tower of london? Towards the end of 1066.
wiki:19616253
Tower of London [SEP] Introduction
The castle was also used as a prison from 1100 (Ranulf Flambard) until 1952 (Kray twins), although that was not its primary purpose. A grand palace early in its history, it served as a royal residence. As a whole, the Tower is a complex of several buildings set within two concentric rings of defensive walls and a moat. There were several phases of expansion, mainly under kings Richard I, Henry III, and Edward I in the 12th and 13th centuries. The general layout established by the late 13th century remains despite later activity on the site. The Tower of London has played a prominent role in English history.