Boundary Wall to Cybi Building, Holyhead High School is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 13 March 2009. Boundary wall.
Boundary Wall to Cybi Building, Holyhead High School
- WRENN ID
- steep-steeple-vermeil
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 13 March 2009
- Type
- Boundary wall
- OS grid reference
- SH 241 825
- Coordinates
- 53.31064, -4.64021
- Source
- Cadw listing
Description
The boundary wall to the Cybi Building at Holyhead High School is constructed of limestone rubble and features cock and hen copings. It includes piers at the corners and entrances, which have ornate moulded caps topped with ball finials, although some of these finials are missing. The eastern section of the wall, which separates the school grounds from the garden of the former headmaster's house, is a lower wall made of snecked stonework with ramped ashlar copings. This section is topped with cast-iron railings that include intermittent scroll-work panels. There are also two additional gate piers in this wall and along the boundary to Seiriol Street.
Local climate
Boundary Wall to Cybi Building, Holyhead High School sits in a wetter-than-average part of the UK, with an average of 1,030 mm of rain a year. This makes it wetter than 83% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 93% of listed buildings.
It experiences an average of 8 freeze-thaw cycles a year, fewer than 93% of listed buildings. Of these, 3 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
- No related consent applications matched
- 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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Similar buildings
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- 4 Boundary Walls and Gate Piers to Number 7
- 5 Parapet/Boundary Walls on Port Lodge approach to Penrhyn Castle
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