Conwy Castle from across the River Conwy — Wikimedia Commons, CC BY-SA 3.0
A Castle Built for Conquest
Conwy Castle was built with breathtaking speed. Edward I ordered its construction in 1283 following his second Welsh campaign, and within just six years Master James of St George — the greatest military architect of the medieval age — had completed one of the most formidable fortresses in Europe. The cost was enormous: around £15,000 at a time when a craftsman's annual wage might be £2. Edward had spent on a scale that demonstrated the seriousness of his intent to subdue Wales permanently.
The design is a masterpiece of concentric planning adapted to the constraints of the site. James used the rocky promontory above the River Conwy to create a long, narrow plan divided into outer and inner wards by a cross wall. Eight massive round towers rise from the walls — each originally topped with a turret so that the castle appeared to bristle with additional height — and four twin-towered gatehouses control access at each end and each side. The whole was surrounded by water on three sides: the estuary, the river and a tidal dock that allowed supply ships to dock directly beneath the walls.
What to See Inside
Today Conwy Castle is managed by Cadw and is open year-round, though hours vary by season. Entry gives you access to the full extent of the ruins, including the ability to climb every surviving tower and walk the wall walk that connects them. The views from the towers are extraordinary: eastward across the estuary and the Three Bridges to the hills beyond, southward over the rooftops of the walled town, and westward to the Carneddau mountains.
The inner ward contains the most historically significant spaces. The Great Hall ran along the north side and would have been the centre of royal administration during Edward I's visits to the castle. The Royal Apartments at the eastern end were the most comfortable quarters, designed for the king himself and his queen, Eleanor of Castile. The Chapel Tower preserves traces of the castle's religious life, and the small prison tower tells a grimmer story of medieval justice.
One of the most dramatic moments in the castle's history came in 1399 when Richard II took refuge here during Henry Bolingbroke's usurpation of the throne. The king had been persuaded to leave the castle under a promise of safe conduct — a promise that was broken, leading ultimately to his deposition and death in Pontefract Castle. Conwy Castle thus played a small but significant role in one of the great dynastic crises of the medieval period.
The UNESCO World Heritage Designation
In 1986 Conwy Castle and its town walls were inscribed as a UNESCO World Heritage Site as part of the Castles and Town Walls of King Edward in Gwynedd, a grouping that also includes Beaumaris, Caernarfon and Harlech. The four castles represent the most complete and best-preserved series of late 13th-century military architecture in Europe, and their inscription recognises both their historical significance and their remarkable state of preservation.
The grouping is sometimes called the Iron Ring of castles, a reference to Edward's strategy of encircling the Welsh heartland of Gwynedd with a chain of fortresses. Conwy occupied a crucial position in this strategy, commanding the crossing of the estuary and the route between England and the Llyn Peninsula. The associated planned town, founded at the same time as the castle and enclosed by the walls that still survive, was intended as a permanent English settlement to consolidate the conquest.
Visiting all four castles is a popular challenge for those exploring North Wales. Beaumaris on Anglesey is the most geometrically perfect of the group; Caernarfon the most politically significant as the birthplace of the Prince of Wales; Harlech the most dramatically sited above Cardigan Bay. But for sheer completeness of the medieval ensemble — castle, walls and town together — Conwy is unmatched.
Conwy Castle Opening Times
Conwy Castle is open every day of the year apart from 24, 25 and 26 December and 1 January. Hours change with the seasons:
| Dates | Opening hours |
|---|---|
| 1 March to 30 June | 9.30am to 5pm |
| 1 July to 31 August | 9.30am to 6pm |
| 1 September to 31 October | 9.30am to 5pm |
| 1 November to 28 February | 10am to 4pm |
Last admission is 30 minutes before closing. The castle can close at short notice in extreme weather, so check Cadw's website or social media on the day if the forecast is wild.
Conwy Castle Tickets and Prices
Cadw prices from 1 September 2026 to 31 March 2027. The joint ticket also covers Plas Mawr, a few minutes' walk away.
| Ticket | Castle only | Castle + Plas Mawr |
|---|---|---|
| Adult | £12.90 | £16.30 |
| Junior (5 to 17) / student | £9.00 | £11.40 |
| Senior (65+) | £11.60 | £14.60 |
| Family (2 adults, up to 3 children) | £41.30 | £52.20 |
| Family (1 adult, up to 3 children) | £28.40 | £35.90 |
| Under 5s, Cadw members, disabled visitor plus companion | Free | Free |
Booking online saves 5% (online tickets are non-refundable). Blue Light Card holders and Armed Forces veterans get 10% off at the gate, and Cadw offers £1 tickets for people on Universal Credit and some other benefits. An audio tour costs £3. If you plan to visit several Cadw sites, such as Caernarfon, Beaumaris or Harlech, Cadw membership or an Explorer Pass usually pays for itself quickly.
Getting There and Parking
The entrance and visitor centre are on Rose Hill Street, at the castle end of town. There is a short-stay pay and display car park right outside the visitor centre, with disabled bays, and a long-stay car and coach park just outside the town walls. See our Conwy parking guide for the alternatives. Conwy railway station is inside the walls, about five minutes' walk away, so the castle is easy to reach by train.
Accessibility, Dogs and Facilities
Be ready for some climbing. The approach is a steep path of about 50 metres with steps, the ground inside is cobbled and uneven in places, and the towers are reached by steep medieval spiral stairs. Cadw rates the site as strenuous. The visitor centre has toilets (down a few steps), a ground-level accessible toilet at the entrance, baby changing, a gift shop, free Wi-Fi and bike storage, and an access guide and portable induction loop are available.
Dogs: from March to October only assistance dogs are allowed. From 1 November to 28 February, dogs on short leads can go on the ground-floor levels. Note that one section of the town walls, between the Watch Tower and the Wing Gate, is closed for repairs and Cadw expects it to reopen by Easter 2027.
The castle is particularly striking at dusk when it is floodlit, and staying in Conwy overnight lets you see it in this light after the day visitors have left. Combine a castle visit with the town walls, Plas Mawr and Aberconwy House for a full day of Conwy's medieval heritage.
Conwy Castle Facts
- Built in record time: work began in 1283 and the main structure was finished in about four years, with a workforce that peaked at around 1,500 men.
- The cost: around £15,000, one of the most expensive of Edward I's Welsh castles.
- The architect: Master James of St George, who also designed Harlech, Beaumaris and Caernarfon. Read more about James of St George.
- Eight towers, two barbicans: the castle has eight great round towers and a barbican at each end, and the town walls add another 21 towers and three original gateways.
- Captured on Good Friday: in 1401 Rhys and Gwilym ap Tudur, cousins of Owain Glyndŷr, seized the castle while most of the garrison was at church in the town.
- A king's last refuge: Richard II sheltered here in 1399 before being lured out and taken prisoner by Henry Bolingbroke.
- Civil War: it was held for Charles I and surrendered to Parliament's forces in 1646.
- Stripped for scrap: in 1665 the lead and iron were removed and sold, which is why the castle has been a roofless ruin ever since.
- Three bridges: Telford's suspension bridge (1826) and Stephenson's tubular railway bridge (1848) both run right up to the castle walls, with the modern road bridge alongside.
- World Heritage: inscribed by UNESCO in 1986 with the town walls, as part of the Castles and Town Walls of King Edward in Gwynedd. See our history of Conwy for the wider story.
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