Name	Type	Date	Condition	Image	Ownership / Access	Notes (Key)
Alnham Vicars Pele	Pele tower	130114th century	Restored		Private
Alnwick Castle	Keep and bailey	110112–14th century	Restored		HH Duke of Northumberland	Remodelled by Robert Adam and Anthony Salvin.
Aydon Castle	Fortified manor house	130114th century	Intact		EH	Converted to farmhouse 17th century.
Bamburgh Castle	Keep and bailey	110112–14th century	Restored		HH Lord Armstrong	Ruinous by 1704, extensively restored 1894–1904.
Barmoor Castle	Tower house	130114–19th century	Rebuilt		Private	1919th century mansion incorporating remains of 14th century building.
Beaufront Castle	Neo-romantic castle	18361836–1841	Intact		Private residence	1919th century mansion on site of 15th century tower house.
Bellister Castle	Castle	120113–14th century	Fragmentary remains		Private	Ruins adjoining 17th century house.
Belsay Castle	Tower house	14391439–60	Intact		EH	Later ruined building attached.
Berwick Castle	Castle	110112–13th century	Fragmentary remains		EH
Bitchfield Castle	Pele tower	130114th century	Restored		Private	Incorporated in later mansion.
Blenkinsop Castle	Tower house	130114th century	Ruins		Private	Incorporated in 19th century house.
Bothal Castle	Castle	130114th century	Rebuilt		Private	Extensively restored 19th century.
Bywell Castle	Castle	140115th century	Fragments		Private	Gatehouse survives.
Callaly Castle	Pele tower	130114–15th century	Intact		Private apartments	Incorporated in later country house.
Cartington Castle	Pele tower and extensions	130114–15th century	Fragmentary remains		Private
Chillingham Castle	Quadrangular castle	13441344	Intact		HH	Altered 17–19th centuries, restored after 1982.
Chipchase Castle	Tower house	130114th century	Intact		HH	Incorporated in Jacobean house, altered 18–19th centuries.
Cocklaw Tower	Tower house	130114–15th century	Shell		Private, farm	Near Wall.
Cocklepark Tower	Tower house	1517c.1517	Substantially intact		Newcastle University
Corbridge Vicar's Pele	Pele tower	13181318	Intact		HAL	Re-roofed 1910.
Coupland Castle	Tower house	150116–17th century	Restored		Private residence	Later additions.
Craster Tower	Pele tower	130114–15th century	Intact		Holiday accommodation	Incorporated in later building.
Crawley Tower	Pele tower	130114th century	Ruins		Private	A cottage was built within the walls in the 18th century.
Cresswell Castle	Pele tower	140115th century	Ruin			170118th century parapet.
Dilston Castle	Tower house	140115th century	Ruins		HC	Altered 16–17th century, later buildings demolished.
Dunstanburgh Castle	Keep and bailey	130114th century	Fragmentary ruins		EH	Spectacular coastal setting.
Edlingham Castle	Keep and bailey	130114th century	Fragmentary ruins		EH
Elsdon Castle	Motte and bailey	100111th century	Earthworks		Private	Well-preserved earthworks.
Elsdon Tower	Pele tower	150116th century	Intact		Private	Altered, rectory until 1960, restored 1990s.
Embleton Tower	Pele tower	130114th century	Intact		Private	1919th century vicarage attached.
Etal Castle	Castle	130114th century	Fragmentary ruins		EH
Featherstone Castle	Castle	130114th century	Intact		Private	130114th century tower, three further towers added 18–19th century.
Ford Castle	Quadrangular castle	130114th century	Substantially intact		Private	Converted into mansion 17th century.
Haggerston Castle	Neo-romantic castle	1893c.1893	Fragment		Caravan site	Surviving tower of c.1893, on site of 14th century castle, in what is now a caravan park.
Halton Castle	Tower house	120113–14th century	Intact		Private residence	Attached to later house.
Harbottle Castle	Keep and bailey	110112–14th century	Fragmentary ruins		HAL Northumberland National Park	Captured by Robert Bruce in 1318.
Haughton Castle	Tower house	120113–14th centuries	Restored		Private	Altered 18–19th centuries.
Hexham Moot Hall and Old Gaol	Fortified towers	130114–15th century	Intact		HM	Probably once connected by bailey wall, AD1415 list of castles has 'Turris de Hexham'.
Horsley Tower	Pele tower	150116th century	Intact		Private residence
Langley Castle	Tower house	1350c.1350	Restored		Hotel	Restored 1890s.
Lemmington Hall	Tower house	140115th century	Restored		Wedding venue	Incorporated in later house.
Lindisfarne Castle	Artillery fort	150116th century	Restored		ENT	Remodelled by Edwin Lutyens 1901.
Mitford Castle	Keep and bailey	100111–13th century	Fragmentary ruins		HC
Morpeth Castle	Castle	13421342–9	Fragments		Landmark Trust	Only gatehouse and a section of wall remain.
Norham Castle	Keep and bailey	110112th century	Ruins		EH	Keep remodelled 1422–5, partly rebuilt 1513–15.
Preston Tower	Pele tower	1401c.1400	Fragment		HC	South wall remains, with two of the original four turrets.
Prior Castell's Tower	Tower house	140115–16th century	Substantially intact		ENT
Prudhoe Castle	Castle	110112–14th century	Ruins		EH
Shilbottle Tower	Pele tower	140115th century	Restored		Private	Incorporated into a vicarage.
Shortflatt Tower	Pele tower	130114–15th century	Restored		Wedding venue	Incorporated in later house.
Thirlwall Castle	Tower house	130114th century	Fragmentary ruins		HAL Northumberland National Park	Built with stone from Hadrian's Wall.
Twizell Castle	Tower house	140115–18th century	Fragmentary ruins		HAL	Medieval ruins incorporated in 18th century folly.
Warkworth Castle	Keep and bailey	110112–14th century	Ruins		EH	Although looked after by English Heritage, partly owned by the Duke of Northumberland.
Whittingham Tower	Pele tower	120113–14th century	Restored		Private	Converted for use as almshouses in 1845.
Whitton Tower	Pele tower	1386c.1386	Intact		Holiday accommodation	Near Rothbury, well-preserved.
Willimoteswick Castle	Fortified manor house	150116th century	Ruins		Private, farm	Incorporates remains of earlier building, largely rebuilt 1900.

Twizell Castle

Twizell Castle stands on a bend of the River Till at Tillmouth Park, Northumberland. Below it, the medieval Twizell bridge spans the river. The gardens of the castle contain the earthwork remains of the once lost medieval village of Twizell, whilst the massive ruin presents the remains of an 18th century castle which was never completed.

A medieval tower house which once stood on the site was, in 1415, held by Sir John Heron. This was destroyed by the Scots in 1496, and the estate was sold by the Herons circa 1520 to a member of the Selby family. A survey in 1561 reported only the remnants of a tower house and a barmkin. Of the medieval structure, blocked windows, a chamfered doorway and the original north-east angle quoins are all that remains visible now.

In 1685 Sir Francis Blake purchased the estate from the widow Selby for £1,944, plus an annuity of £100, and the Blake family lived on the estate until 1738 when they moved to nearby Tillmouth Hall. From about 1770, he worked on the recreation of the castle as a Gothic Revival mansion, designed by architect James Nesbit of Kelso to be five levels tall. Despite some forty years of work, the project was never completed. When in 1882, the Blake's built a new mansion at Tillmouth Park much of the incomplete Twizell Castle was demolished and the stone used in the new construction. The house is now a two-story folly. Rectangular in plan, with circular towers on the angles and two wings on the north side, the basement rooms in the main block are stone and brick-vaulted as a precaution against fire.