Best Castles Near Cardiff
Written by UK Hidden Gems Editorial
Updated 5 August 2026
The best castles near Cardiff are Castell Coch, Ogmore Castle, Candleston Castle, East Orchard Castle, Usk Castle, Oystermouth Castle, Nunney Castle and Sham Castle.
Cardiff sits in the Vale of Glamorgan with castles scattered across the country around it, from Norman ruins on the coast to Victorian fantasies and follies. Right on the city's edge, the fairytale towers of Castell Coch rise from beech woods above Tongwynlais.
West along the Vale lie a run of medieval ruins: the dune-swallowed manor of Candleston at Merthyr Mawr, the riverside Ogmore with its stepping stones, and the obscure East Orchard manor near St Athan. North into Monmouthshire, the lived-in ruin of Usk Castle keeps its gardens among the walls, while west on Gower the Norman Oystermouth looks over Swansea Bay.
Across the Bristol Channel in Somerset are two more: the moated village castle of Nunney and the eighteenth-century Sham Castle folly above Bath. Some are grand set pieces, others quiet or curious ruins.
Here are eight castles to seek out near Cardiff.
Castell Coch
Photo: John Lord via Geograph.org.uk
Castell Coch Emerging from steep beech woodland on the hillside above Tongwynlais, north of Cardiff, this castle wears three round towers crowned with tall, pointed conical roofs, giving it the air of something from a storybook set among the trees. It was the work of the Victorian architect William Burges, who from 1868 remodelled it for the third Marquess of Bute upon the footings of a far older medieval castle.
Within, the painted drawing room and banqueting hall preserve the richly decorated scheme he designed for them. It is a treat for anyone drawn to Victorian imagination at full stretch.
Ogmore Castle
Photo: Mick Lobb via Geograph.org.uk
Ogmore Castle A line of stepping stones leads across the River Ewenny beside these Norman ruins and off over the fields toward Merthyr Mawr, a crossing worth timing around the tide. Ogmore sits low beside Ogmore-by-Sea in the Vale of Glamorgan, at the point where river meets sea, its three-storey keep, among the oldest in Glamorgan, still upright amid broken curtain wall and grassy banks and ditches that once held seawater.
The de Londres family began building here around 1106. Cattle wander the open, freely entered site, and the riverside car park can vanish under a high tide, so keep an eye on the water.
Candleston Castle
Photo: John Lord via Geograph.org.uk
Candleston Castle is slowly being swallowed by sand. This fourteenth-century fortified house, more manor than true castle, stands where farmland and woodland run up against the great dunes of Merthyr Mawr, near Bridgend, and the Merthyr Mawr Warren has been creeping over it for centuries.
Among the highest dunes in Britain, they roll away beyond its ivy-clad walls and broken tower. You can wander the ruins freely, picking out the old rooms, an arched doorway and a fine fireplace still set in the stone.
Trees and wildflowers crowd the site, paths run off into the sand and woods, and the wind never stops shifting the dunes. Half castle, half sandcastle.
East Orchard Castle
Photo: Alan Hughes via Geograph.org.uk
East Orchard Castle On low ground above the River Thaw in the Vale of Glamorgan, near St Athan, stand the ruins of this medieval manor house. Parts of a large hall block remain, with windows and fireplaces still to be made out, along with a long chapel, a barn and a stone dovecote that has survived in good order.
The Berkerolles family held it first, the Stradlings after them, and it slipped out of use during the eighteenth century. Because it lies on private farmland, it stays an obscure and seldom-visited ruin.
It rewards those who enjoy history well away from the crowds.
Usk Castle
Photo: Pauline E via Geograph.org.uk
Usk Castle People still live among these ruins, tending gardens between the stone keep, towers, curtain walls and gatehouse of a medieval castle set on a hill just north of Usk town in Monmouthshire. That mix of ancient stronghold and family home is what sets it apart.
Visitors are welcome to wander the ruins and grounds, though steep steps, low doorways and uneven footing all ask for care. The gates open on Sunday and bank holiday afternoons through spring and summer, with a small donation invited on the way in.
It is a warmer, more personal sort of castle than the big set-piece sites.
Oystermouth Castle
Photo: Rob Farrow via Geograph.org.uk
Oystermouth Castle is a ruined Norman castle on a low hill above Mumbles, looking out over Swansea Bay at the eastern end of Gower. Founded soon after 1106 and rebuilt in stone by the de Braose family from about 1220, it keeps a high curtain wall, a chapel and three-storey ranges with fireplaces and garderobes.
Edward the First visited in 1284. After a conservation project completed in 2011, a glass bridge lets visitors reach the upper chapel, where medieval wall paintings and traceried windows survive.
It is run by the city council and open in season, with wide views over the bay.
Nunney Castle
Photo: Michael Dibb via Geograph.org.uk
Nunney Castle is a tall, compact moated castle set right in the middle of the village of Nunney in Somerset, its water-filled moat fed by the village brook. Built as a fortified house, it has four round corner towers with conical caps around a rectangular keep, one whole side of which has collapsed, opening the interior to view.
Sir John de la Mare was given licence to build it in 1373. During the Civil War it was besieged and taken by Parliament in 1645, and its north wall finally fell in on Christmas Day 1910.
It is a free English Heritage site beside the church.
Sham Castle
Photo: Derek Harper via Geograph.org.uk
Sham Castle Walk round the back and the illusion collapses: this is a castle one stone deep, a decorative screen wall with nothing whatsoever behind it. From the front it convinces, a central pointed arch set between round turrets and square battlemented towers, complete with blank windows.
Ralph Allen, Bath's quarry owner and postal reformer, had it put up on Bathampton Down in 1762 with no purpose but to smarten the outlook from his town house down the hill. Free to reach on foot on the slopes east of the city, it is lit up after dark, and it repays the walk with wide views back over Bath.
FAQs
Which castles near Cardiff are free to visit?
Nunney in its Somerset village, Ogmore on the Ewenny and the Sham Castle folly above Bath are the free castles near Cardiff, reached on foot without an admission charge. Castell Coch and Oystermouth charge admission, while East Orchard sits on private farmland and Usk asks a small donation on its open afternoons.
What can you see at Castell Coch near Cardiff?
At Castell Coch near Cardiff you can see three round towers with tall conical roofs rising from beech woods, and inside a richly painted drawing room and banqueting hall designed by William Burges. It is the showpiece of these castles, while nearby Candleston is a more haunting ivy-clad ruin being slowly swallowed by the great dunes of Merthyr Mawr.
Which castles near Cardiff have an unusual history or feature?
Usk Castle is a rare lived-in castle near Cardiff, with a family home and gardens among the ruins, and Sham Castle above Bath is a pure folly, a screen wall built only to improve a view. Nunney lost one whole wall on Christmas Day 1910, opening its keep to view, and Ogmore keeps a line of stepping stones across its river.
Conclusion
Cardiff sits in the Vale of Glamorgan with castles scattered all around, from Norman ruins to Victorian fantasies and follies. On the city's edge, the fairytale towers of Castell Coch rise from beech woods.
West along the Vale lie the dune-swallowed Candleston, the riverside Ogmore with its stepping stones, and the obscure East Orchard manor. North in Monmouthshire, the lived-in Usk Castle keeps gardens among its walls, while on Gower the Norman Oystermouth overlooks Swansea Bay.
Across the channel in Somerset are the moated village castle of Nunney and the Sham Castle folly above Bath. From a storybook Victorian tower to a decorative sham, these are the castles to seek out near Cardiff.
