Priory Walls, including North, West and Postern Gateways is a Grade II* listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 16 December 1976. House - terrace.

Priory Walls, including North, West and Postern Gateways

WRENN ID
muffled-garret-amber
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 December 1976
Type
House - terrace
Address
Priory Walls, including North, West and Postern Gateways, Powys
OS grid reference
SO 043 290
Coordinates
51.9515, -3.39302
Source
Cadw listing

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

Description

The Priory Walls, which include the North, West, and Postern gateways, are a significant structure dating from the medieval period. These massive walls are constructed of stone rubble and feature an embattled parapet. They extend southwest from the former Almonry, connecting the three gateways.

The North gateway is characterized by a tall segmental-headed arch that has two pointed-headed niches above it, along with a parapet walk at the rear. There is also an arch made of dressed stone on the eastern side, adjacent to the former Almonry. The West gateway boasts a wide segmental-headed arch made of dressed stone, and to the south, there is a narrow pedestrian arch with a chamfered architrave. The Postern gateway features a curved-headed arch of dressed stone topped with a gable.

To the east of the Postern gateway, the wall is lower and includes corbels near the southwest corner. The wall then turns at approximately a right angle to run in a southwest to northeast direction, roughly parallel to the southeast elevation of the Deanery.

Local climate

Priory Walls, including North, West and Postern Gateways sits in one of the wettest parts of the UK, with an average of 1,170 mm of rain a year. This makes it wetter than 90% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 79% of listed buildings.

It experiences an average of 50 freeze-thaw cycles a year, more than 91% of listed buildings. Of these, 28 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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  2. No.5 St John's Terrace Grade II 30 m
  3. No.6 St John's Terrace Grade II 31 m
  4. The Almonry Grade II 34 m
  5. 1 Priory Hill Grade II 38 m
  6. 2 Priory Hill Grade II 42 m
  7. 3 Priory Hill Grade II 47 m
  8. Tithe Barn, Brecon Cathedral Grade II* 57 m
  9. Community Centre, including Boundary and Retaining Walls Grade II 69 m
  10. Priory Lodge Grade II 79 m