Milestone on A4059 SE of Tir-yr-onen is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 6 August 2002. Milestone.

Milestone on A4059 SE of Tir-yr-onen

WRENN ID
tilted-plinth-bracken
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
6 August 2002
Type
Milestone
Address
Milestone on A4059 SE of Tir-yr-onen, Penderyn, Hirwaun, Rhondda Cynon Taff
OS grid reference
SN 968 126
Coordinates
51.8027, -3.49735
Source
Cadw listing

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

Description

This is a freestone mile marker located on the A4059 southeast of Tir-yr-onen. It has a rounded top and is inscribed with the distance to Brecon, which is 14 miles.

Local climate

Milestone on A4059 SE of Tir-yr-onen sits in one of the wettest parts of the UK, with an average of 1,340 mm of rain a year. This makes it wetter than 96% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 89% of listed buildings.

It experiences an average of 53 freeze-thaw cycles a year, more than 93% of listed buildings. Of these, 30 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
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  • 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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  1. Milestone on A4059 E of Tir-yr-onen Grade II 37 m
  2. Milestone on A4059 Grade II 1.6 km
  3. Hepste Fawr Grade II 1.8 km
  4. Bridge over Nant Aber-nant stream Grade II 3.7 km
  5. Milestone on A470 S of Pont Llysiog Grade II 3.8 km
  6. Church of Saint Mary Grade II* 3.9 km
  7. Lychgate and railings to Church of Saint Mary Grade II 3.9 km
  8. Cantref Reservoir dam, including valve house, draw-off tower and spillway, (partly in Llanfrynach) Grade II 3.9 km
  9. Cantref Reservoir dam, including valve house, draw-off tower and spillway, (partly in Hirwaun) Grade II 4.0 km
  10. Cantref Water Filtration Plant Grade II 4.0 km