Wales · Ruin
Harlech Castle
Harlech Castle is a late 13th-century concentric stone fortress built by Edward I on a rocky knoll above the Irish Sea at Harlech, Gwynedd. Constructed between 1282 and 1289, it features a prominent D-shaped gatehouse, multiple round towers and a water-gate with a stair to the shore; it is a World Heritage Site managed by Cadw and now survives as a ruin.
First raised
1283
Its prime
1289
Today
Ruin
As it stood in 1289
The shape it held in its prime.
Concentric stone castle perched on a rocky knoll (the Harlech Dome) overlooking coastal plains and dunes, built of local grey‑green sandstone with pale yellow ashlar detail. A massive D‑shaped gatehouse with twin round flanking towers dominates the eastern approach, reached by a stone bridge across a rock‑cut ditch and former bridge towers. The inner ward is ringed by four large circular towers and curtain walls with crenellated walkways; a water‑gate and a long flight of 127 steps descend the cliff to the former shoreline.
Its story
The story of Harlech Castle.
Edward I raised Harlech on a rocky knoll above the Irish Sea during his invasion of Wales, building it between 1282 and 1289 for the relatively modest sum of £8,190. Sir Otton de Grandson had taken the site with 560 infantry in May 1282. The concentric design, with its massive gatehouse and a water-gate allowing resupply by sea, shows the Savoyard influence of its main architect, James of Saint George.
The castle withstood Madog ap Llywelyn's siege of 1294–1295 but fell to Owain Glyndŵr in 1404, becoming his residence, family home and military headquarters; he held his second parliament at Harlech in August 1405 before English forces retook it in 1409. During the Wars of the Roses, Margaret of Anjou fled here in 1460, and Lancastrians under Dafydd ap Ieuan held out from 1461 until 1468 — the seven-year siege memorialised in 'Men of Harlech'.
In the Civil War, Harlech held for Charles I until 1647, the last fortification to surrender to the Parliamentary armies. UNESCO ranks it with Beaumaris, Conwy and Caernarfon among the finest late 13th-century military architecture in Europe, and the ruin is now a World Heritage Site managed by Cadw, known since 2024 under its Welsh name only.
Step inside
9 places to explore in 1289.
The record describes 9 distinct spots at Harlech Castle — including 3 interiors: gatehouse passage and upper rooms, chapel interior, prison tower (le prisontour) and dungeon. Create your own photoreal reconstruction and walk through every one — more scenes means more photos, more angles and more rooms of the immersive experience.
Create History
Recreate Harlech Castle with AI to explore it.
The artist rebuilds it as it stood in 1289 — a photoreal walk that belongs to you alone. Pay with coins, no subscription needed.
Recreate Castle to Explore →
