Remains of the Great Hall of Brecon Castle is a Grade I listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 16 January 1952. A Medieval Remains of a castle.

Remains of the Great Hall of Brecon Castle

WRENN ID
stark-footing-flax
Grade
I
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
Remains of a castle
Period
Medieval
Address
Remains of the Great Hall of Brecon Castle, Powys
OS grid reference
SO 043 287
Coordinates
51.94876, -3.39378
Source
Cadw listing

Also on this page: flood risk · radon risk · weather exposure · detailed attributes ↓

Description

The remains of the Great Hall of Brecon Castle are a significant medieval structure. The south wall is still standing and features four trefoiled windows in the Early English style, along with four smaller lancet-headed openings below. To the east, there is a tower topped with a crenellated parapet and equipped with arrow loops. The right return includes a projecting staircase turret. At the rear, which faces the hotel, there are 2-light mullioned windows.

Local climate

Remains of the Great Hall of Brecon Castle 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.

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Nearby listed buildings

  1. Brecon Castle Hotel Grade II* 20 m
  2. Former Watergate Mill Grade II 46 m
  3. Building immediately to W of former Watergate Mill Grade II 46 m
  4. Stone Wall to NE of Castle Hotel which faces River Honddu, including Stone Outbuilding at N end Grade II 48 m
  5. Watergate Baptist Church Grade II 57 m
  6. Forecourt Walls, Piers, Gates and Railings to Watergate Baptist Church Grade II 69 m
  7. Castle Bridge Grade II 72 m
  8. 7 Watergate Grade II 73 m
  9. 6 Watergate Grade II 78 m
  10. Ely Tower of Brecon Castle Grade I 79 m