Enclosure walls at former pilots' cottages for Trwyn Du, or Black Point, Lighthouse is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 26 March 1999. Enclosure wall.

Enclosure walls at former pilots' cottages for Trwyn Du, or Black Point, Lighthouse

WRENN ID
pitched-panel-crow
Grade
II
Local Planning Authority
Isle of Anglesey
Constituency
Ynys Môn MP: Llinos Medi (PC)
Country
Wales
Date first listed
26 March 1999
Type
Enclosure wall
Address
Enclosure walls at former pilots' cottages for Trwyn Du, or Black Point, Lighthouse, Llangoed
OS grid reference
SH 640 812
Coordinates
53.31057, -4.04156
Source
Cadw listing

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

Description

The enclosure walls at the former pilots' cottages for Trwyn Du, or Black Point, Lighthouse are made of coursed and squared rubble with raking copings. These walls define the front and rear enclosures of the cottages. On the seaward side, which faces Puffin Island, the wall features an embattled design and includes two low bastion towers.

Local climate

Enclosure walls at former pilots' cottages for Trwyn Du, or Black Point, Lighthouse sits in one of the wettest parts of the UK, with an average of 1,190 mm of rain a year. This makes it wetter than 91% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 86% of listed buildings.

It experiences an average of 38 freeze-thaw cycles a year, more than 73% of listed buildings. Of these, 21 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
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  • 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. Pilot's Cottage (former) No 1 Grade II 17 m
  2. Pilot's Cottage (former No 2) Grade II 45 m
  3. Trwyn Du, or Black Point, Lighthouse Grade II* 272 m
  4. Dovecote and barn at Penmon Priory Grade II* 1.1 km
  5. The Holy Well and Cell Grade I 1.1 km
  6. Priory house outbuilding Grade II 1.1 km
  7. Priory Church of St Seiriol Grade I 1.2 km
  8. Refectory at Penmon Priory Grade I 1.2 km
  9. Priory House Grade II* 1.2 km
  10. Remains of monastic settlement including tower and walls Grade I 1.4 km