Castles in Wales: The Complete 2027 Guide to Over 600 Fortresses
Wales has more castles per square mile than anywhere else on Earth. The total sits at over 600, from ruined hillforts and earthwork mottes to fully restored medieval fortresses still commanding their towns eight centuries on.
This guide covers the best Welsh castles to visit in 2027, organised by region, with current admission prices, opening patterns and what’s actually changed for the year ahead, not just a year-swap on last year’s facts.
How Many Castles Are There in Wales?
Wales has over 600 castles, making it the most castle-dense nation on Earth. The exact number depends on how you count: Cadw, the Welsh Government’s historic environment service, maintains around 130 in state care, while the full figure of 600+ includes ruined towers, earthwork mottes, fortified manor houses and privately owned estates.
Most were built between 1067 and 1415. The Norman conquest of Wales triggered a castle-building programme on a scale Europe had rarely seen, and Edward I’s Iron Ring, built after 1277, is the most famous chapter: eight castles constructed in just 40 years at Beaumaris, Caernarfon, Conwy, Harlech, Rhuddlan, Flint, Aberystwyth and Builth. Four of these, Beaumaris, Caernarfon, Conwy and Harlech, were inscribed together as a single UNESCO World Heritage Site in 1986.
The Best Castles to Visit in North Wales
North Wales holds the greatest concentration of major medieval fortresses in the country. Most are managed by Cadw and charge entry; the Cadw Explorer Pass covers unlimited entry to over 130 sites, worth it if you’re planning three visits or more in a week.
Caernarfon Castle — LL55 2AY
The most powerful castle in Wales. Edward I built it from 1283, inspired by the Theodosian walls of Constantinople, and the coloured stone banding and polygonal towers were a deliberate piece of political theatre.
Adult entry is £14.90 (5% off booking online), open year-round. Read the full Caernarfon Castle guide.
Conwy Castle — LL32 8AY
Eight massive towers connected by a curtain wall 1,400 metres long, built in just four years from 1283. The medieval town walls normally let you walk the full circuit for free, but they’re currently closed for safety work, with new railings and protective mesh being fitted, and are due to reopen at Easter 2027.
Adult entry is £12.90 (current Cadw band to 31 March 2027). Read the full Conwy Castle guide.
Beaumaris Castle — LL58 8AP
The last and most technically perfect castle Edward I ever built. Started in 1295, never finished. The concentric design, rings within rings, was so advanced that no army could have taken it by force, and it’s a UNESCO World Heritage Site in its own right.
Adult entry is £10.40, located on Anglesey, 20 minutes from the Menai Bridge. Read the full Beaumaris Castle guide.
Harlech Castle — LL46 2YH
Perched on a 60-metre rock above Tremadoc Bay, built between 1282 and 1289. The song “Men of Harlech” commemorates a seven-year siege that ended in 1468, and the views west to the Llŷn Peninsula and Cardigan Bay are exceptional.
Adult entry is £10.40. Read the full Harlech Castle guide.
Criccieth and Denbigh Castles
Two smaller but genuinely worthwhile North Wales castles with their own detailed guides: Criccieth Castle, built by Welsh princes before Edward I took it, overlooking Tremadog Bay, and Denbigh Castle, a dramatic hilltop ruin above the market town of the same name.
Rhuddlan Castle — LL18 5AD
First of Edward I’s concentric castles in Wales, started 1277. Smaller than Conwy or Caernarfon but historically significant: the Statute of Rhuddlan (1284), which formally annexed Wales to England, was issued here.
Entry is free. Managed by Cadw, open during daylight hours.
The Best Castles to Visit in South Wales
South Wales castles tell a different story to the north. Many were built by Marcher Lords, the Anglo-Norman nobles who controlled the borderlands between England and Wales.
Caerphilly Castle — CF83 1JD
The largest castle in Wales and the second largest in Britain after Windsor. Built from 1268 by Gilbert de Clare, covering 12 hectares including an artificial lake system used as a defensive moat, with a leaning tower that tilts at a sharper angle than the Tower of Pisa. Following two years of conservation work, the castle reopened in 2026 with new digital exhibits in the Great Hall and inner ward.
Adult entry is £12.90 at the single-location rate (Cadw’s own current price; check before you travel, as this has risen from previous years following the refurbishment).
Cardiff Castle — CF10 3RB
Two thousand years of history in one site: a Roman fort beneath, a Norman motte on top, and Victorian Gothic apartments built by the Marquess of Bute in the 1860s. The State Apartments are extraordinary; no photograph does them justice.
Adult entry is £16.50. Full guide at our Cardiff destination page.
Raglan Castle — NP15 2BT
The finest late-medieval castle in Wales, built in the 1430s as a statement of wealth rather than just military strength. The Great Tower stood until the Civil War, when Parliamentarian forces spent 13 weeks reducing it by cannon fire.
Adult entry is approximately £8.50, 10 miles from Abergavenny. Read the full Raglan Castle guide.
Pembroke Castle — SA71 4LA
Birthplace of Henry VII in 1457. The round keep, 23 metres tall with walls 4 metres thick, is one of the best-preserved Norman towers in Britain, and the Great Hall hosts living history events through summer.
Adult entry is approximately £10. Read the full Pembroke Castle guide.
Chepstow Castle — NP16 5EY
The oldest surviving post-Roman stone fortification in Britain. Work began in 1067, within a year of the Norman conquest, on a 30-metre cliff above the River Wye.
Adult entry is approximately £8, Cadw managed. Read the full Chepstow Castle guide.
Castles in West Wales: Pembrokeshire to Ceredigion
West Wales is castle country in a different sense: the landscape here is wilder, and many of the fortresses are dramatically sited on coastal promontories or river cliffs.
Carreg Cennen Castle — SA19 6UA
The most dramatically positioned castle in Wales, sitting on a 100-metre limestone crag in the Brecon Beacons, visible for miles across the Black Mountain. A working farm at the foot of the hill runs a tea room and car park, and the cave passage beneath the castle is accessible with a torch.
Adult entry is approximately £7. Read the full Carreg Cennen Castle guide.
Cilgerran Castle — SA43 2SF
Two huge circular towers above the Teifi Gorge. Turner painted it twice, and the RSPB cormorant colony on the river below adds unexpected wildlife watching to the visit.
Adult entry is approximately £5.50, 3 miles from Cardigan off the A478.
Kidwelly Castle — SA17 5BQ
One of the best-preserved Norman castles in Wales, with the round towers and gatehouse largely intact. Located in the town of Kidwelly, Carmarthenshire.
Adult entry is approximately £7.
Mid Wales and the Marches: Border Castles and Hidden Fortresses
Mid Wales saw some of the fiercest fighting between Welsh princes and Norman lords. The castles here are often less visited but no less impressive.
Powis Castle — SY21 8RF
Not a ruin: Powis is a fully lived-in castle in the care of the National Trust. The medieval fortress houses the Clive Museum, the largest private collection of South Asian artefacts of its type in the UK, and the hanging gardens, carved into the hillside in four terraces, date from the 1680s and are unlike anything else in Wales.
Castle and garden adult entry is £18 at peak times, £13 off-peak, near Welshpool. Some Castle Rooms have been closed for conservation work; check current access before you travel. Read the full Powis Castle guide.
Montgomery Castle — SY15 6HH
A ruined castle on a ridge above the elegant Georgian town of Montgomery. Free to enter, with views extending 20 miles east into Shropshire on a clear day, and managed by Cadw.
Dolwyddelan Castle — LL25 0JD
Said to be the birthplace of Llywelyn the Great, Wales’s most powerful medieval prince. The rectangular tower stands largely intact on a volcanic crag above a glacial valley.
Adult entry is approximately £5.50, 5 miles from Betws-y-Coed on the A470.
Planning Your Welsh Castle Visit: Tickets, Passes and the 2027 Levy
The Cadw Explorer Pass gives unlimited entry to over 130 historic sites across Wales. A 3-day pass (valid over 7 days) costs £28 for a single adult, £42 for two adults, or £67.20 for a family; a 7-day pass (valid over 14 days) costs £42 single, £63 for two adults, or £78.50 for a family. Prices correct from April 2026 — verify at cadw.gov.wales before booking, since Cadw’s prices move annually.
Most Cadw castles are closed Christmas Day and New Year’s Day. Winter hours (roughly October to March) are typically shorter, and Caernarfon in particular is worth booking online in advance during July and August. Parking at major castles costs £2–£5; Caernarfon and Conwy have town centre car parks nearby, while Harlech and Beaumaris have smaller on-site car parks that fill early in summer. Dogs are welcome on leads at most Cadw sites, though Pembroke and Caerphilly are exceptions worth checking individually.
From April 2027, Welsh councils that adopt it can charge a visitor levy of £1.30 per person per night on most accommodation (75p for campsites and hostels). It applies to where you stay, not castle admission, but if you’re booking 2027 accommodation near any of these castles, ask your host whether the local council has adopted it (Welsh Government guidance).
Castles You Can Stay In Overnight
Several Welsh castles offer accommodation inside their walls or in converted buildings within the grounds. Fonmon Castle in the Vale of Glamorgan (CF62 3ZN) operates as a wedding and events venue with overnight stays available, and Gwrych Castle in Abergele is currently under restoration.
For the full picture, including genuinely medieval stays like Roch Castle and Cardigan Castle, see our guide to where you can really sleep in a Welsh castle.
More Welsh Heritage: Working Wool Mills
If castles are your way into Welsh history, the country’s surviving working wool mills are a natural next stop. Several sit close to castles already on this list, including one at Trefriw in the Conwy Valley and Solva Woollen Mill near St Davids in Pembrokeshire. See our complete guide to Welsh wool mills and textile heritage for five genuinely working mills, all free to visit.
Welsh Castles for Families: Best for Children in 2027
The best family castle experiences in Wales offer more than just walls to look at. Caerphilly Castle runs family events throughout the year, including summer siege days, jousting displays and guided tours for children, and the scale of the site, lakes, towers and the tilting tower, is genuinely dramatic for young visitors. Beaumaris Castle has an interactive app guide designed for children, and its moat is still water-filled, which makes it visually engaging for younger visitors. Harlech Castle has open grassy areas within the walls, and the gatehouse is accessible for children to explore the rooms and stairs freely.
Cadw’s junior explorer booklets are available free at the entrance to most major sites, turning the visit into a trail with stamps to collect.
Frequently Asked Questions: Castles in Wales
How many castles are there in Wales?
Wales has over 600 castles, making it the most castle-dense country in the world. Cadw manages around 130 in state care, and the full figure includes ruins, earthworks and fortified manor houses.
What is the biggest castle in Wales?
Caerphilly Castle is the largest castle in Wales and the second largest in Britain after Windsor Castle, covering approximately 12 hectares including its lake and water defences.
Which Welsh castles are UNESCO World Heritage Sites?
Four castles and town walls have UNESCO World Heritage status: Beaumaris, Caernarfon, Conwy and Harlech, collectively known as the Castles and Town Walls of King Edward in Gwynedd, inscribed in 1986.
Is the Cadw Explorer Pass worth buying?
Yes, if you plan to visit three or more Cadw sites. A 3-day pass costs £28 for a single adult and covers entry to over 130 sites. Individual castle entry ranges from around £5.50 to £16.50, so the pass pays for itself quickly on a dedicated castle trip.
What is the most dramatic castle in Wales?
Carreg Cennen Castle in Carmarthenshire is widely regarded as the most dramatically sited, sitting on a 100-metre limestone crag with views across the Black Mountain. Harlech Castle, perched above Cardigan Bay, is a close second.
Is Conwy Castle’s town wall open in 2027?
The walls are currently closed for safety work, with Cadw fitting stronger railings and protective mesh. They are due to reopen at Easter 2027, but check Cadw’s website before you travel in case the work overruns.
Pembrokeshire-born travel writer and founder of Wales.org. Born in Haverfordwest, now based in Hertfordshire — covering Welsh castles, national parks, festivals and family staycations across all 22 Welsh counties.
