About
At the heart of Llanidloes, a small market town in the hills of central Wales, stands one of the most unusual buildings in Britain — the only surviving indoor medieval market hall in Wales. The Old Market Hall, raised on oak timber stilts over the marketplace in the sixteenth century, has presided over the trading life of the town for more than four hundred years. Today it houses the Llanidloes Museum, whose collections document the history of a Welsh border community with a remarkable range of stories to tell.
The hall's construction is a masterpiece of vernacular timber framing — a two-storey structure carried on wooden arcades that once sheltered the market stalls beneath, while the town's council chamber and later the assize court occupied the room above. The museum preserves the character of this exceptional building while presenting the history of Llanidloes and the surrounding countryside of mid-Wales, where the counties of Montgomeryshire, Radnorshire, and Merionethshire met.
The most dramatic episode in the town's history came in April 1839, when Llanidloes briefly fell under the control of Chartist weavers and flannel workers. The Chartist movement, agitating for parliamentary reform and the People's Charter, had strong support among the handloom weavers of mid-Wales, whose traditional industry was being undercut by the new power-loom mills of the English north. When Special Constables arrived from London to enforce order, the town's Chartist sympathisers overpowered them, freed prisoners from the inn where they were held, and controlled the town for several days before troops restored order. It was one of the most significant Chartist direct actions in Wales, predating the Newport Rising by several months.
Beyond the Chartist episode, the museum covers the history of flannel weaving in mid-Wales, the archaeology of the surrounding hills, the lead and silver mining heritage of the upper Severn valley, and the natural history of this upland landscape where the River Severn rises in the Cambrian Mountains to the west.
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Plan Your Visit
⏱️ Recommended Visit Duration
💡 Visitor Tips
- The Old Market Hall itself is the star attraction — allow time to appreciate the timber-frame construction up close, especially the arcade and the upper floor structure.
- The museum has limited opening hours and is in a remote area — phone ahead before visiting, especially outside the summer season.
- Car is strongly recommended for reaching Llanidloes — public transport connections from the nearest rail station (Caersws or Newtown) are limited.
- The museum is not wheelchair accessible due to the historic building's steps and uneven floors.
- Combine with Radnorshire Museum in Llandrindod Wells (16 miles south-east) for a full mid-Wales heritage day.
- The red kite population of mid-Wales is extraordinary — you are likely to see kites over the town at any time of year. The Clywedog reservoir area is particularly good.
- Llanidloes's town centre has several good independent shops and cafés — the flannel trade may be gone but the market-town character survives.
Highlights
The Old Market Hall: Wales's Unique Medieval Building
The Old Market Hall of Llanidloes is the only surviving indoor medieval market hall in Wales — a two-storey timber-framed building raised on oak posts over the market place in the sixteenth century. The lower arcade, open to the street, sheltered market stalls from the weather, while the upper floor served as the town's council chamber and assize court.
The structure is a masterpiece of Welsh vernacular carpentry: the great oak beams, the jettied upper floor, and the overall proportions speak of the confidence and prosperity of a market town at its medieval height.
To stand inside it is to stand in a building that has witnessed four centuries of Llanidloes life.
The Chartist Rising of 1839
In late April 1839, Llanidloes became briefly famous as the site of one of the most dramatic Chartist direct actions in Wales. When London Special Constables arrived to arrest local Chartist leaders, the town's flannel weavers and workers overwhelmed them, freed the prisoners, and controlled the town for several days before troops restored order.
Three men were subsequently transported to Australia.
The rising predated the better-known Newport Rising of November 1839 and demonstrated the depth of radical feeling among mid-Wales's handloom weaving communities, whose traditional industry was being displaced by new mechanised mills. The museum tells this story with particular care as a defining moment in the town's identity.
The Flannel Weaving Industry of Mid-Wales
For centuries Llanidloes and the upper Severn valley were at the heart of the Welsh flannel trade — a domestic industry employing handloom weavers in cottages and small workshops throughout the region. The annual Llanidloes market was a major destination for flannel merchants from England, and the trade shaped the town's social structure, its politics (Nonconformist chapel culture and radical politics went hand in hand with weaving), and its landscape.
The museum documents the tools, the processes, and the community life of the flannel industry from its medieval origins to its decline in the late nineteenth century.
Lead and Silver Mining in the Upper Severn
The hills surrounding Llanidloes are threaded with old mine workings — the legacy of an extensive lead and silver mining industry that was active from the Roman period through to the late nineteenth century. The Van Mine and the Bryntail Mine to the west of the town produced significant quantities of lead ore (galena) and silver, and the mining companies brought a different kind of worker to mid-Wales in the Victorian period — engineers, investors, and labourers from the English mining districts.
The museum holds material from the local mining industry alongside the geology that made this corner of Wales so mineralogically productive.
Collections
Llanidloes Museum's collections are housed in the Old Market Hall, Wales's only surviving indoor medieval market hall, and focus on the history of the town and the upper Severn valley. Key collections include material relating to the 1839 Chartist rising, the flannel weaving industry, lead and silver mining in the area, and the natural history of the Cambrian uplands.
Archaeological holdings document prehistoric and early medieval occupation.
Social history collections cover Nonconformist chapel life, community organisations, and the Welsh-language heritage of a border market town.
The Old Market Hall
The building's architecture and its place in Welsh heritage
Rise and Resist: Chartism in Mid-Wales
The 1839 Chartist rising and its causes and consequences
Flannel, Lead, and Wool
The industries that shaped Llanidloes and the upper Severn valley
The Natural Cambrian
Wildlife and landscape of the Cambrian Mountains
Current Exhibitions
No current exhibitions. Please check the museum website for updates.