Obelisk monument S of St Tetta's church is a Grade II listed building in the Brecon Beacons National Park local planning authority area, Wales. First listed on 17 December 1998. Monument.

Obelisk monument S of St Tetta's church

WRENN ID
scarred-balcony-furze
Grade
II
Local Planning Authority
Brecon Beacons National Park
Constituency
Brecon, Radnor and Cwm Tawe MP: David Chadwick (LD)
Country
Wales
Date first listed
17 December 1998
Type
Monument
Address
Obelisk monument S of St Tetta's church, Llanddetti, Talybont-On-Usk, Powys
OS grid reference
SO 128 202
Coordinates
51.87377, -3.26791
Source
Cadw listing

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

Description

The obelisk monument located south of St Tetta's church is a tall structure made of ashlar stone. It features a tiered base topped by a slightly tapered plinth, with inscription panels on each side—one main inscription facing south and another facing east. At the top, there is a shallow pediment that includes a carved motif. This pediment supports the base of the obelisk, which is slightly broached at the bottom and tapers to a point.

Local climate

Obelisk monument S of St Tetta's church sits in one of the wettest parts of the UK, with an average of 1,180 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 78% of listed buildings.

It experiences an average of 57 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. Church of St Tetta Grade II* 7 m
  2. Group of 3 chest tombs E of St Tetta's church Grade II 10 m
  3. Group of 5 chest tombs S of St Tetta's church Grade II 15 m
  4. Dan-y-graig Bridge (Canal Bridge No.137) Grade II 428 m
  5. Llanddetti Bridge (Canal Bridge No.139) Grade II 452 m
  6. Llanddetty Hall Farmhouse Grade II 471 m
  7. Llanddetty Hall barn and attached ranges Grade II 498 m
  8. Wenallt Lower Bridge (Canal Bridge No.140) Grade II 722 m
  9. Workhouse Bridge (Canal Bridge No 136) Grade II 723 m
  10. Workhouse Bridge (Canal Bridge No.136) Grade II 724 m