Wales · Ruin
Hen Domen
Hen Domen is the earthwork site of an early Norman timber motte-and-bailey castle near Montgomery, Powys, built by Roger de Montgomery around 1070 and occupied into the early 12th century. The site preserves a steep-sided motte, surrounding ditch and the footprint of a small oval bailey; excavations have revealed timber buildings including a hall, tower, palisade, gatehouse and granary.
First raised
1071
Its prime
1100
Today
Ruin
As it stood in 1100
The shape it held in its prime.
A low, steep-sided earthen motte 8 m high with a flat round summit c.6.7 m across stands in the south-west corner of an oval bailey 50 by 40 metres, surrounded by an oval ditch about 2.7 m deep. At prime the motte bears a tall timber tower linked by a narrow timber bridge to the bailey, whose defences are a continuous wooden palisade enclosing a compact cluster of timber buildings including a small hall, gatehouse and granary.
Its story
The story of Hen Domen.
Hen Domen — Welsh for "old mound" — is the site of the original Montgomery Castle, a timber motte-and-bailey built by Roger de Montgomery, first Earl of Shrewsbury, around 1070, after William the Conqueror gave him extensive areas of Shropshire. From 1105 it was the home of the de Boulers (Bowdler) family, and it is from Baldwin de Boulers that Montgomery takes its Welsh name, Trefaldwyn — "the town of Baldwin".
Excavations from the 1960s to the 1990s revealed a grand and complex timber castle: a towering building on the 8-metre-high motte, connected by a bridge to a bailey containing a large hall, along with a wooden palisade on the bailey defences, a wooden tower, a gatehouse, a granary and a possible chapel.
When the castle was rebuilt in stone between 1223 and 1234, it was moved to a rocky promontory a mile to the south-east — the location of the present town of Montgomery — and Hen Domen was left behind. The Old Bell Museum in Montgomery holds permanent exhibitions on both castles, with scale models of each.
Step inside
10 places to explore in 1100.
The record describes 10 distinct spots at Hen Domen — including 3 interiors: bailey: the great hall (interior), granary and service buildings, possible chapel or small timber chapel footprint. 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 Hen Domen with AI to explore it.
The artist rebuilds it as it stood in 1100 — a photoreal walk that belongs to you alone. Pay with coins, no subscription needed.
Recreate Castle to Explore →Whose castle
Clans who held Hen Domen.
The families that held Hen Domen for a decade or more across its history — follow a name to its clan.
Montgomery
Built by Roger de Montgomery, first Earl of Shrewsbury, around 1070 as the original Montgomery Castle.
de Boulers
Home of the de Boulers (Bowdler) family from 1105; Baldwin de Boulers gave Montgomery its Welsh name, Trefaldwyn.
