Clifford's Tower stands as a proud symbol of the power of England's medieval kings. Originally built by William the Conqueror to subdue the rebels of the north, it was twice burned to the ground, before being rebuilt by Henry III in the 13th century. The tower takes its name from one grisly incident in its long history when Roger de Clifford was executed for treason against Edward II and hanged in chains from the tower walls. With sweeping panoramic views of York and the surrounding countryside, it isn't hard to see why Clifford's Tower played such a crucial role in the control of northern England.
https://www.visityork.org/explore/cliffords-tower-p793171