Wales · Partial ruin
Tomen y Mur
Tomen y Mur is a Roman auxiliary fort site on an isolated spur in Gwynedd, Wales, founded in the late 1st century AD and rebuilt in stone in the early 2nd century. The Roman fort's earthworks and a reconstructed section of its 2nd-century curtain wall survive; a later Norman motte stands within the fort's remains. The site is a scheduled monument managed by Snowdonia National Park Authority.
Its prime
120
Today
Partial ruin
As it stood in 120
The shape it held in its prime.
A low, roughly rectangular Roman fort of squared stone curtain walls and surviving earthwork banks sits on a grassy spur above rolling pastures; a reconstructed section of 2nd-century curtain wall shows courses of roughly dressed local stone blocks with a slightly raised top. The interior is an open grassy parade area with traces of foundations; the surrounding landscape is open moorland falling away to distant Snowdonia ridges under wide, often cloudy skies.
Its story
The story of Tomen y Mur.
Tomen y Mur began as a Roman auxiliary fort, constructed in AD 78 during the North Wales campaigns of the governor Gnaeus Julius Agricola, on an isolated spur northeast of Llyn Trawsfynydd beside the Roman road known as Sarn Helen. Rebuilt in stone in the early 2nd century, it was occupied until it was abandoned around AD 140.
In the 11th century the Normans reused part of the site for a motte, which still stands within the fort's earthworks alongside a reconstructed section of the 2nd-century curtain wall. The site is a scheduled monument managed by Snowdonia National Park Authority.
Step inside
10 places to explore in 120.
The record describes 10 distinct spots at Tomen y Mur — including 3 interiors: interior parade ground, bath house foundations, mansio (inn) site. 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 Tomen y Mur with AI to explore it.
The artist rebuilds it as it stood in 120 — a photoreal walk that belongs to you alone. Pay with coins, no subscription needed.
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