|Knaresborough, North Yorkshire, England|
|The ruins of the keep of Knaresborough Castle.|
|Owner||Duchy of Lancaster|
|Controlled by||Harrogate Borough Council|
|Built||Around 1100, rebuilt 1301–1307|
|In use||Until 1648|
The castle was first built by a Norman baron in c.1100 on a cliff above the River Nidd. 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.
In 1205 King John took control of Knareborough Castle. He regarded Knaresborough as an important northern fortress and spent £1,290 on improvements to the castle. The castle was later rebuilt at a cost of £2,174 between 1307 and 1312 by Edward I and later completed by Edward II, including the great keep. John of Gaunt acquired the castle in 1372, adding it to the vast holdings of the Duchy of Lancaster.
The castle was taken by Parliamentarian troops in 1644 during the Civil War, and largely destroyed in 1648 not as the result of warfare, but because of an order from Parliament to dismantle all Royalist castles. Indeed, many town centre buildings are built of 'castle stone'.
The remains are open to the public and there is a charge for entry to the interior remains. The grounds are used as a public leisure space, with a bowling green and putting green open during summer. It is also used as a performing space, with bands playing most afternoons through the summer. It plays host to frequent events, such as FEVA. The property is owned by the monarch as part of the Duchy of Lancaster holdings, but is administered by Harrogate Borough Council.
The castle, now much ruined, comprised two walled baileys set one behind the other, with the outer bailey on the town side and the inner bailey on the cliff side. The enclosure wall was punctuated by solid towers along its length, and a pair, visible today, formed the main gate. At the junction between the inner and outer baileys, on the north side of the castle stood a tall five-sided keep, the eastern parts of which has been pulled down. The keep had a vaulted basement, at least three upper stories, and served as a residence for the lord of the castle throughout the castle's history. The castle baileys contained residential buildings, and some foundations have survived.
- Brown, R. Allen (April 1959), "A List of Castles, 1154–1216", The English Historical Review (Oxford University Press) 74 (291): 249–280
- Fry, Plantagenet Somerset, The David & Charles Book of Castles, David & Charles, 1980, p. 249. ISBN 0-7153-7976-3
- King, David James Cathcart (1983), Catellarium Anglicanum: An Index and Bibliography of the Castles in England, Wales and the Islands. Volume I: Anglesey–Montgomery, Kraus International Publications
- Knaresborough Castle - official site at Knaresborough Online
- Castle & Museum - official site at Harrogate Borough Council
- Knaresborough Castle on castlexplorer.co.uk