Walls Attached to Numbers 12 to 15 is a Grade I listed building in the County Durham local planning authority area, England. First listed on 10 March 1988. A Medieval Castle walls.

Walls Attached to Numbers 12 to 15

WRENN ID
fossil-cinder-hemlock
Grade
I
Local Planning Authority
County Durham
Constituency
City of Durham MP: Mary Kelly Foy (Lab)
Country
England
Date first listed
10 March 1988
Type
Castle walls
Period
Medieval
OS grid reference
NZ 272 421
Coordinates
54.77319, -1.57777
Source
Historic England listing

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

Description

The walls attached to numbers 12 to 15 are part of the castle walls, dating from the 12th century and possibly incorporating earlier materials. These high walls feature flat wide buttresses and a round-arched opening leading to the Lying House. They also include slit openings from a 'soldiers' walk', which is an intra-mural passage that provided separate access along the wall without entering the Priory garden. Additionally, these walls contain the only visible remains of the Priory infirmary, which has been demolished above ground level, except for a section that is now part of the stables north of the Lying House. A similarly buttressed stretch of wall extends northwards from the west range of the castle.

Local climate

Walls Attached to Numbers 12 to 15 receives an average of 790 mm of rain a year. This makes it drier than 58% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 96% of listed buildings.

It experiences an average of 41 freeze-thaw cycles a year, more than 79% of listed buildings. Of these, 24 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. Priory Prison and Former Stables North of Number 15 Grade I 11 m
  2. Garages North of Number 15 Grade II 24 m
  3. Cathedral Cloister West Range Grade I 34 m
  4. Fulling Mill Archaeology Museum Grade II 40 m
  5. Prior's Kitchen (Dean and Chapter Library) Grade I 59 m
  6. Lavatorium in Centre of Cloister Garth Grade I 61 m
  7. Cathedral Cloister South Range Grade I 62 m
  8. Water Hydrant North of Number 12 Grade II 65 m
  9. 11, The College Grade II 89 m
  10. Durham Light Infantry South African War Memorial Grade II 94 m