The Complete Guide to Beaumaris Castle:
Beaumaris Castle Guide 2026: Tickets, History, Tours & Visitor Tips
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Beaumaris Castle (Castell Biwmares) on the Isle of Anglesey was the last, largest and most ambitious of Edward I’s Welsh fortresses — a UNESCO World Heritage Site built on a blank canvas with two concentric rings of walls, and yet never actually finished. Money ran out and Scotland demanded attention before the towers ever reached their intended height, leaving what historians now call the most technically perfect unfinished castle in Britain. This complete guide covers everything you need for a 2026 visit — tickets, opening times, parking, transport, accessibility and what to see.
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Beaumaris Castle history: why was it built?
Beaumaris Castle was begun in 1295, the last of the four great fortresses Edward I built in north Wales, following Conwy, Caernarfon and Harlech. Unlike those sites, Beaumaris was built on an entirely flat, undeveloped stretch of marshland beside the Menai Strait — the Welsh name “beau mareys” means “beautiful marsh” — giving Edward’s architect, Master James of St George, a genuine blank canvas after three previous castles built around difficult, constrained sites.
The result was a fortress of near-perfect symmetry: two concentric rings of walls, an inner ward ringed by a lower outer curtain, a water-filled moat with its own dock so ships could unload supplies directly into the castle, and outer walls bristling with an estimated 300 arrow loops. It is widely considered the most technically accomplished of all the Edwardian castles in Wales, precisely because its design was never compromised by an awkward site.
Beaumaris Castle is part of the “Castles and Town Walls of King Edward in Gwynedd” UNESCO World Heritage Site, inscribed in 1986 alongside Conwy, Caernarfon and Harlech.
For wider context on Wales’s castle-building history, see our guide to how many castles there are in Wales.
The greatest castle never built
Despite its scale and ambition, Beaumaris was never actually completed. By the 1320s, building work had petered out entirely, undone by a familiar combination of problems: the huge cost of the project and Edward’s attention (and treasury) being pulled towards conflict in Scotland. The south gatehouse and the six great towers of the inner ward never reached their intended height, and the planned Llanfaes gate was barely started before work stopped for good.
That incompleteness is exactly why historians rate Beaumaris so highly. Its squat, truncated towers are physical evidence of a project that ran out of money before it ran out of ambition — earning it the nickname “the greatest castle never built.” Cadw itself describes it as perhaps Edward and James of St George’s masterpiece, precisely because what survives shows the purest version of their design, unmuddied by an awkward site or later alterations.
Beaumaris Castle tickets & prices 2026
You can purchase tickets on arrival or book online to save 5% — online ticket prices are non-refundable. Book directly with Cadw here.
| Ticket category | Price |
|---|---|
| Adult | £10.40 |
| Family (2 adults + up to 3 children) | £33.30 |
| Family (1 adult + up to 3 children) | £22.90 |
| Senior (65+) | £9.30 |
| Junior (5–17) / Student | £7.20 |
| Official members | FREE |
| Under 5s | FREE |
| Disabled visitor & companion | FREE |
Last entry is 30 minutes before the gates close. Beaumaris Castle is closed on 24, 25 and 26 December and 1 January.
Beaumaris Castle opening times
| Period | Opening hours |
|---|---|
| 1 March – 30 June | 09:30 – 17:00 |
| 1 July – 31 August | 09:30 – 18:00 |
| 1 September – 31 October | 09:30 – 17:00 |
| 1 November – 28 February | 10:00 – 16:00 |
| 24–26 Dec, 1 Jan | Closed |
Last admission is always 30 minutes before closing.
Explorer Pass: best value for multi-castle visits
If your trip includes several castles, a Cadw Explorer Pass usually pays for itself. It covers entry to all of Cadw’s staffed heritage sites, including Beaumaris, Caernarfon, Conwy, Harlech, Caerphilly and Castell Coch.
See our Caernarfon Castle guide for current 3-day and 7-day Explorer Pass prices, which apply across all Cadw sites including Beaumaris.
Discounts & concessions
£1 Universal Credit tickets
Beaumaris Castle offers £1 tickets to visitors in receipt of qualifying Universal Credit or other named benefits, bookable in advance on the official Cadw website only. Children under 5, and disabled visitors with a companion, don’t need tickets at all.
Blue Light Card & military veterans
Blue Light Card holders and HM Armed Forces personnel and veterans get a 10% discount at the gate on production of valid ID. This isn’t available on online bookings — pay in person to claim it, or weigh it against the 5% online booking saving depending on which is worth more for your group.
Beaumaris Castle parking, postcode & directions
Sat-nav postcode: LL58 8AP. The main town car park, directly opposite the castle, gives the most direct route in — be mindful of two-way traffic here. Seafront and other town car parks are a short walk away and can fill on summer weekends.
By road: the A545 from Menai Bridge, or the A5 from Bangor.
Getting to Beaumaris Castle
Like Caernarfon, Beaumaris does not have its own railway station, so a car or bus is the most practical way in.
By train and bus
The nearest mainline station is Bangor, around 11km (7 miles) away on the Crewe–Bangor/Holyhead line, served by Transport for Wales. From Bangor, local buses run onward into Beaumaris. The nearest stop, Ena’s, is just 100m from the castle, served by routes 53, 57 and 58 between Bangor, Beaumaris, Llandonna and Penmon.
By car
The A545 (from Menai Bridge) or A5 (from Bangor). See parking details above.
By bike
National Cycle Network Route 5 passes within 5km of Beaumaris.
From Snowdonia and the rest of Anglesey
Beaumaris sits on the Isle of Anglesey, a short drive from the Menai Bridge and within easy reach of Eryri (Snowdonia) across the strait — making it a natural stop on a wider tour of both.
What to see inside Beaumaris Castle
The two concentric rings
Beaumaris is built on a true concentric plan, with an outer ring of defences fully enclosing an inner ring, itself enclosing the inner ward. This layered design meant an attacker breaching the outer wall would find themselves trapped in a killing ground overlooked by the inner defences — a design perfected here precisely because the flat site placed no constraints on the layout.
The water-filled moat and dock
Uniquely among Edward’s Welsh castles, Beaumaris had its own tidal dock built directly into the moat, allowing supply ships to sail right up to the castle walls and unload cargo under the protection of the fortifications — a reminder that this was as much a supply base as a military stronghold.
The unfinished towers and gatehouses
Walking the inner ward, the six great towers and the south gatehouse are visibly truncated — stopped mid-construction when funding ran out in the 1320s. The abandoned Llanfaes gate, barely begun, is a further physical record of a project that outgrew its budget.
The on-site exhibition
An exhibition within the monument covers the castle’s construction, its place in the UNESCO World Heritage Site, and the story of why it was never finished.
Guided tours and events at Beaumaris Castle 2026
Cadw runs a free Beaumaris Castle History Tour included with admission, with no booking required — simply turn up. Tours run at 11am, 12pm, 1pm, 2pm and 3pm and last around 40 minutes, covering the castle’s history and how the Welsh princes tie into the wider story of Edward’s conquest.
Dated events through the year have included a Medieval Festival, with knights, jesters and a staged battle, and a Spooky Halloween event on 31 October. Check Cadw’s events calendar before travelling, since dates and availability change through the year.
What else to do near Beaumaris: nearby attractions & cafés
Beaumaris Gaol
A short walk from the castle in the town itself, this preserved Victorian gaol gives a considerably more macabre look at 19th-century justice, including the condemned cell and treadwheel.
Penmon Priory, Cross and St Seiriol’s Well
Around 3 miles from the castle, this site combines a medieval priory church, an intricately carved cross and an ancient holy well associated with the 6th-century St Seiriol.
Penmon Dovecote
Close to the priory, this striking 16th-century dovecote once housed nesting boxes for hundreds of pigeons — described by Cadw as “a bird box on a truly epic scale.”
Puffin Island boat trips
Boat trips from Beaumaris pier run out to Puffin Island (Ynys Seiriol), a small island reserve off Anglesey’s coast known for its seabird colonies and grey seals.
Cafés & lunch spots
Beaumaris town has a good range of independent cafés and restaurants within a short walk of the castle, many along the seafront looking out toward the Menai Strait.
Dogs & accessibility
Is Beaumaris Castle dog friendly?
Dogs on short leads are welcome to access the ground floor levels of the site. Please don’t let dogs eat any vegetation around the site, some of which can be poisonous.
Accessibility
Cadw rates the terrain at Beaumaris Castle as Level 2, Easy — the most accessible of Edward I’s four great Welsh castles, since most of the route is a grassed walk within the castle’s inner grounds. Specific access notes:
- Entrance route: A short walk past the wet moat and over a wooden bridge, including a short steep resin ramp on the exit of the visitor centre and a gravel path.
- Inner grounds: Largely flat and grassed, though can be wet and slippery in poor weather.
- Wall walks: Reached via several external stone steps; handrails are provided.
- Mobility scooters: The surface includes gravel paths and cobbles that can be challenging for some scooters — check suitability before your visit, or contact the site in advance.
- Hearing loop: A portable induction loop is available on site.
- Companions: Disabled visitors with a companion enter free.
See Cadw’s own Beaumaris Castle access guide for full detail, or contact the site directly ahead of your visit: 03000 252239 / BeaumarisCastle@gov.wales.
Where to stay near Beaumaris Castle
Beaumaris itself has a good range of guesthouses, boutique hotels and B&Bs within walking distance of the castle and seafront, and the wider Isle of Anglesey and Eryri coastline offer a much broader range of hotels and holiday cottages within a short drive.
Book your Beaumaris Castle break
Find hotels, cottages and B&Bs within easy reach of Beaumaris Castle.
Beaumaris holiday cottages →For wider recommendations, see our guides to the Isle of Anglesey, Eryri (Snowdonia) and our short breaks in Wales guide.
Visitor tips for Beaumaris Castle
- Book online for the 5% discount if you already know when you’re visiting.
- Join the free History Tour — no booking needed, and it runs five times a day, so there’s little reason to skip it.
- Allow 1 to 1.5 hours for the castle itself, more if you combine it with Beaumaris Gaol in town.
- This is the easiest of Edward’s four great castles to get around — a good choice if Caernarfon or Conwy’s steep stairs aren’t practical for your group.
- Watch your footing near the moat entrance — the resin ramp and gravel path can be slippery in wet weather.
- Combine with Penmon Priory and the Dovecote, both around 3 miles away, for a fuller day on this side of Anglesey.
- Park in the main town car park opposite the castle for the most direct route in, rather than the seafront car parks further away.
Frequently asked questions about Beaumaris Castle
How much do Beaumaris Castle tickets cost in 2026?
Adult £10.40, Junior (5–17) and Student £7.20, Senior (65+) £9.30, Family (2 adults + up to 3 children) £33.30, Family (1 adult + up to 3 children) £22.90. Children under 5, official members and disabled visitors with a companion enter free. Booking online saves 5%; Blue Light Card holders and HM Armed Forces personnel and veterans get a 10% discount at the gate instead (not available online).
What are Beaumaris Castle’s opening times?
09:30–17:00 from March to June and September to October; 09:30–18:00 in July and August; 10:00–16:00 from November to February. Last entry is 30 minutes before closing. Closed 24–26 December and 1 January.
Why is Beaumaris called “the greatest castle never built”?
Construction began in 1295 but was never completed. By the 1320s, a combination of huge cost and Edward I’s attention shifting to conflict in Scotland brought building work to a halt. The south gatehouse and six great inner-ward towers never reached their intended height, and the planned Llanfaes gate was barely started. Despite this, it’s widely considered the most technically perfect of Edward’s castle designs, since its flat site placed no constraints on the layout.
Is Beaumaris Castle wheelchair accessible?
Beaumaris is rated Level 2, Easy by Cadw, the most accessible of Edward I’s four great Welsh castles, with most of the route a flat grassed walk. The entrance involves a short ramp and gravel path, and wall walks require external stone steps. A portable hearing loop is available, and disabled visitors with a companion enter free.
Is Beaumaris Castle dog friendly?
Dogs on short leads are welcome to access the ground floor levels of the site.
How do I get to Beaumaris Castle by public transport?
Beaumaris does not have its own railway station. The nearest is Bangor, around 11km (7 miles) away on the Crewe–Bangor/Holyhead line, with onward local buses (routes 53, 57, 58) into Beaumaris. The Ena’s bus stop is 100m from the castle.
Is there a guided tour of Beaumaris Castle?
Yes, a free History Tour is included with admission and requires no advance booking. Tours run at 11am, 12pm, 1pm, 2pm and 3pm and last around 40 minutes.
Is Beaumaris Castle a UNESCO World Heritage Site?
Yes. Beaumaris Castle is part of the “Castles and Town Walls of King Edward in Gwynedd” UNESCO World Heritage Site, alongside Conwy, Caernarfon and Harlech, inscribed in 1986.
How long should I spend at Beaumaris Castle?
Most visitors spend 1 to 1.5 hours exploring the walls and inner ward, longer if joining one of the free History Tours. Add Beaumaris Gaol in town, a short walk away, for a fuller half-day.
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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.
