The Old Museum is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 16 January 1952. Chapel.
The Old Museum
- WRENN ID
- upper-latch-bone
- Grade
- II
- Local Planning Authority
- Brecon Beacons National Park
- Constituency
- Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
- Country
- Wales
- Date first listed
- 16 January 1952
- Type
- Chapel
- Address
- The Old Museum, Powys
- OS grid reference
- SO 045 284
- Coordinates
- 51.94662, -3.39072
- Source
- Cadw listing
Description
The Old Museum is a former chapel built from stone and faced in cement rendering. It has two storeys and consists of two blocks with three and two windows. The taller block features a slate roof with paired bracketed eaves. There is a band and pilasters at the first-floor level, while the ground floor is rusticated. The first-floor windows are round-headed sash windows with interlacing tracery and have moulded archivolts. A plain round-headed doorway is located in the center, accessed by steps, and features panelled doors and a fanlight; the windows are similar to those above. The right-hand return wall curves at the northeast end, showcasing exposed stone with brick dressings around the windows, similar to the front. At the west end, there is a slightly lower wing with three storeys and two windows, featuring floors at different levels compared to the main block. This wing also has round-headed windows with interlacing tracery and a parapet with plain capping.
Local climate
The Old Museum sits in one of the wettest parts of the UK, with an average of 1,260 mm of rain a year. This makes it wetter than 93% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 82% of listed buildings.
It experiences an average of 56 freeze-thaw cycles a year, more than 96% of listed buildings. Of these, 32 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
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- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
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