Knaresborough Castle

Knaresborough Castle is a ruined fortress overlooking the River Nidd in the town of Knaresborough, North Yorkshire, England.

The castle was first built by a Norman baron in c. 1100 on a cliff above the River. There is documentary evidence dating from 1130 referring to works carried out at the castle by Henry I. In the 1170s Hugh de Moreville and his followers took refuge there after assassinating Thomas Becket.