A picture of Tower of London, a Historic Building in the town of London, in the county of Greater London

The White Tower is a central tower, the old keep, at the Tower of London. It was built by William the Conqueror during the early 1080s, and subsequently extended. The White Tower was the castle's strongest point militarily, and provided accommodation for the king and his representatives, as well as a chapel. Henry III ordered the tower whitewashed in 1240.

white tower William the Conqueror whitewashed Greater London