19 Castles in Cornwall

This list of castles in England is not a list of every building and site that has "castle" as part of its name, nor does it list only buildings that conform to a strict definition of a castle as a medieval fortified residence. It is not a list of every castle ever built in England, many of which have vanished without trace, but is primarily a list of buildings and remains that have survived. In almost every case the buildings that survive are either ruined, or have been altered over the centuries. For several reasons, whether a given site is that of a medieval castle has not been taken to be a sufficient criterion for determining whether or not that site should be included in the list.

Boscastle is a village and fishing port on the north coast of Cornwall, England, UK, in the civil parish of Forrabury and Minster. It is 14 miles (23 km) south of Bude and 5 miles (8 km) northeast of Tintagel. The harbour is a natural inlet protected by two stone harbour walls built in 1584 by Sir Richard Grenville and is the only significant harbour for 20 miles (32 km) along the coast. The village extends up the valleys of the River Valency and River Jordan. Heavy rainfall on 16 August 2004 caused extensive damage to the village.

Caerhays Castle or Carhayes Castle is a semi-castellated manor house 0.5 mi (0.80 km) south of the village centre, St Michael Caerhays, Cornwall, England, UK. It overlooks Porthluney Cove on the English Channel. The garden hosts the largest collection of magnolias in the United Kingdom and contains one of four National Magnolia Collections under the auspices of the National Council for the Conservation of Plants and Gardens.

Carn Brea Castle on Carn Brea is a 14th-century grade II listed granite stone building which was extensively remodelled in the 18th century as a hunting lodge in the style of a castle for the Basset family. The building is in private use as a restaurant.

Carn Brea is a civil parish and hilltop site in Cornwall, England, United Kingdom. The population of Carn Brea including Bosleake and Church Coombe was 8,013 at the 2011 census. The hilltop site is situated approximately one mile (1.6 km) southwest of Redruth. The settlements of Bosleake, Brea, Broad Lane, Carn Arthen, Carn Brea Village, Carnkie, Four Lanes, Grillis, Illogan Highway, Pencoys, Penhallick, Piece, Pool, Tolskithy, Tregajorran, Treskillard, Tuckingmill and West Tolgus are in the parish.

Castle Horneck is a Grade II* listed building, and refurbished Georgian mansion to the west of the Cornish town of Penzance. It is currently owned by the Youth Hostels Association (YHA) and has been used as a youth hostel since 1950.

Helston Castle was a medieval castle built for Edmund, 2nd Earl of Cornwall in the late 13th-century, in Helston, Cornwall. The castle was ruined by the end of the 15th-century, and sat at the bottom of Coinagehall Street, where the bowling green and Grylls Monument are now located. Although very little is known about the castle, it is speculated that the castle was a fortified manor house.

Ince Castle is three miles (5 km) from Saltash in Cornwall, England, UK. It is not a castle in the conventional sense, but a manor house built of brick. It was built in 1642, at the start of the English Civil War and was captured in 1646. Attached to the house are four three-storey towers with walls 1.2 metres thick. There is a classical portico and the windows are rectangular. The house and estate were sold in the 1850s and let as a farm but it became increasingly run down and covered in ivy by the 20th century. It burnt down in 1988 but it has now been rebuilt.

Launceston Castle is located in the town of Launceston, Cornwall, England. It was probably built by Robert the Count of Mortain after 1068, and initially comprised an earthwork and timber castle with a large motte in one corner. Launceston Castle formed the administrative centre of the new earldom of Cornwall, with a large community packed within the walls of its bailey. It was rebuilt in stone in the 12th century and then substantially redeveloped by Richard of Cornwall after 1227, including a high tower to enable visitors to view his surrounding lands. When Richard's son, Edmund, inherited the castle, he moved the earldom's administration to Lostwithiel, triggering the castle's decline. By 1337, the castle was increasingly ruinous and used primarily as a gaol and to host judicial assizes.

Liskeard Castle was a motte-and-bailey castle in the town of Liskeard in Cornwall. No extant remains survive of the castle.

Pendennis Castle is an artillery fort constructed by Henry VIII near Falmouth, Cornwall, England between 1540 and 1542. It formed part of the King's Device programme to protect against invasion from France and the Holy Roman Empire, and defended the Carrick Roads waterway at the mouth of the River Fal. The original, circular keep and gun platform was expanded at the end of the century to cope with the increasing Spanish threat, with a ring of extensive stone ramparts and bastions built around the older castle. Pendennis saw service during the English Civil War, when it was held by the Royalists, and was only taken by Parliament after a long siege in 1646. It survived the interregnum and Charles II renovated the fortress after his restoration to the throne in 1660.

Pengersick Castle is a fortified Manor House located between the villages of Germoe and Praa Sands in Cornwall, England. The tower house, which is in the parish of Breage, is a Grade I listed building. Parts of the building date from the early 16th century.

Penstowe Castle, also called Kilkhampton Castle, was a medieval fortification built near Kilkhampton, Cornwall, England, possibly during the years of the civil war in the 12th century known as the Anarchy.

Restormel Castle lies by the River Fowey near Lostwithiel in Cornwall, England, UK. It is one of the four chief Norman castles of Cornwall, the others being Launceston, Tintagel and Trematon. The castle is notable for its perfectly circular design. Although once a luxurious residence of the Earl of Cornwall, the castle was all but ruined by the 16th century. It was briefly reoccupied and fought over during the English Civil War but was subsequently abandoned. It is now under the supervision of the English Heritage and open to the public.

St Catherine's Castle is a Henrician castle in Cornwall, England, built by Thomas Treffry between approximately 1538 and 1540, in response to fears of an invasion of England by France and the Holy Roman Empire. The D-shaped, stone fortification, equipped with five gun-ports for cannon, overlooked the mouth of the River Fowey in Cornwall. It was protected by a curtain wall and the surrounding cliffs. The castle remained in use for many years until it was closed at the end of the Napoleonic Wars in 1815. Brought back into service in 1855 during the Crimean War, it was fitted with two new artillery positions, but it soon became obsolete and was abandoned. During the Second World War the castle was refortified and used to house a battery of naval guns, protecting the coast against the threat of German attack. At the end of the conflict the castle was restored to its previous condition and is now managed by English Heritage as a tourist attraction.

St Mawes Castle is an artillery fort constructed by Henry VIII near Falmouth, Cornwall, between 1540 and 1542. It formed part of the King's Device programme to protect against invasion from France and the Holy Roman Empire, and defended the Carrick Roads waterway at the mouth of the River Fal. The castle was built under the direction of Thomas Treffry to a clover leaf design, with a four-storey central tower and three protruding, round bastions that formed gun platforms. It was initially armed with 19 artillery pieces, intended for use against enemy shipping, operating in partnership with its sister castle of Pendennis on the other side of the estuary. During the English Civil War, St Mawes was held by Royalist supporters of King Charles I, but surrendered to a Parliamentary army in 1646 in the final phase of the conflict.

St Michael's Mount is a tidal island in Mount's Bay, Cornwall, United Kingdom. The island is a civil parish and is linked to the town of Marazion by a man-made causeway of granite setts, passable between mid-tide and low water. It is managed by the National Trust, and the castle and chapel have been the home of the St Aubyn family since approximately 1650.

Tintagel Castle is a medieval fortification located on the peninsula of Tintagel Island adjacent to the village of Tintagel (Trevena), North Cornwall in the United Kingdom. The site was possibly occupied in the Romano-British period, as an array of artefacts dating from this period have been found on the peninsula, but as yet no Roman-era structure has been proven to have existed there. It was settled during the early medieval period, when it was probably one of the seasonal residences of the regional king of Dumnonia. A castle was built on the site by Richard, 1st Earl of Cornwall in the 13th century, during the High Middle Ages. It later fell into disrepair and ruin.

Trematon Castle is situated near Saltash in Cornwall, England, United Kingdom. It was the caput of the feudal barony of Trematon. It is similar in style to the later Restormel Castle, with a 12th-century keep. Trematon Castle overlooks Plymouth Sound and was built probably by Robert, Count of Mortain on the ruins of an earlier Roman fort: it is a motte-and-bailey castle and dates from soon after the Norman conquest. It occupies a sentinel position one and a half miles south-east of Trematon village.