Warwick Castle is a medieval castle in Warwick, the county town of Warwickshire, England. It sits on a cliff overlooking a bend in the River Avon. Warwick Castle was built by William the Conqueror in 1068 within or adjacent to Anglo-Saxon burh of Warwick. It was used as a fortification until the early 17th century, when Sir Fulke Greville converted it to a country house. It was owned by the Greville family, who became earls of Warwick in 1759, until 1978
From 1088, the castle traditionally belonged to the Earl of Warwick, and it served as a symbol of his power. The castle was taken in 1153 by Henry of Anjou, later Henry II. It has been used to hold prisoners, including some from the Battle of Poitiers in the 14th century. Under the ownership of Richard Neville – also known as "Warwick the Kingmaker" – Warwick Castle was used in the 15th century to imprison the English king, Edward IV. In the 17th century the grounds were turned into a garden. Warwick Castle was purchased by The Tussauds Group in 1978 and opened as a tourist attraction. It is protected as a Scheduled Ancient Monument and a Grade I listed building.