Hadrians Wall Milecastle and Turret is a Grade I listed building in the Northumberland National Park local planning authority area, England. First listed on 24 November 1967. A Roman Military/roman frontier structure.

Hadrians Wall Milecastle and Turret

WRENN ID
errant-balcony-stoat
Grade
I
Local Planning Authority
Northumberland National Park
Constituency
Hexham MP: Joe Morris (Lab)
Country
England
Date first listed
24 November 1967
Type
Military/roman frontier structure
Period
Roman
Address
Hadrians Wall Milecastle and Turret, B 6318, Melkridge
OS grid reference
NY 730 670
Coordinates
54.99771, -2.42218
Source
Historic England listing

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

Description

Hadrian's Wall milecastle 41 and turret 40B date from AD 122 and were reconstructed in AD 205. They feature a rubble core with dressed stone faces. The course of the wall runs west from near Green Slack to near Caw Gap, with several sections of wall masonry standing at approximately 5 metres high. This site is the only location of the milecastle and turret and is designated as a Scheduled Ancient Monument.

Local climate

Hadrians Wall Milecastle and Turret sits in a wetter-than-average part of the UK, with an average of 990 mm of rain a year. This makes it wetter than 80% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 63% of listed buildings.

It experiences an average of 57 freeze-thaw cycles a year, more than 96% of listed buildings. Of these, 36 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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  • 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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Nearby listed buildings

  1. Hadrians Wall Milecastle and Turrets Grade I 1.2 km
  2. The Netty or Privy at High Close A Burn Grade II 1.3 km
  3. Hadrians Wall Milecastles and Turrets Grade I 1.7 km
  4. Great Chesters Farmhouse Grade II 2.6 km
  5. Threshing Barn and Additions North of High Town House Grade II 3.1 km
  6. Cart Shed and Lean-To Shed West of High Town House Grade II 3.1 km
  7. High Town House Grade II 3.1 km
  8. Cottage on East Bay of High Town House Grade II 3.1 km
  9. Outbuilding to Rear of Melkridge Hall Grade II 3.2 km
  10. Melkridge Hall Grade II 3.2 km