Walls of enclosed garden and summerhouse at Tros-y-marian is a Grade II listed building in the Isle of Anglesey local planning authority area, Wales. First listed on 30 January 1968. Garden structure.
Walls of enclosed garden and summerhouse at Tros-y-marian
- WRENN ID
- little-remnant-aspen
- Grade
- II
- Local Planning Authority
- Isle of Anglesey
- Constituency
- Ynys Môn MP: Llinos Medi (PC)
- Country
- Wales
- Date first listed
- 30 January 1968
- Type
- Garden structure
- Address
- Walls of enclosed garden and summerhouse at Tros-y-marian, Llangoed
- OS grid reference
- SH 611 810
- Coordinates
- 53.30821, -4.08492
- Source
- Cadw listing
Description
The walls of the enclosed garden and summerhouse at Tros-y-marian date from the late 17th century and are located to the south and east of the house. They are constructed from rubble masonry. The summerhouse, or pavilion, is situated at the southern end of the main garden, facing the house. It is built of roughly dressed masonry arranged in courses and is currently roofed with profiled asbestos sheeting, featuring stone copings on shaped kneelers. The front gable, which faces north, has block finials and a squat stack at the rear. The main elevation looks towards the garden and the house to the north, featuring a central round-headed doorway flanked by recessed 6-pane lights between advanced pilasters, with an arched recess above the doorway. The Royal Commission on the Ancient and Historical Monuments of Wales believes that the summerhouse originally included plastered pilasters, cornices, and other decorative elements. The interior of the summerhouse was not inspected during the survey.
Local climate
Walls of enclosed garden and summerhouse at Tros-y-marian sits in one of the wettest parts of the UK, with an average of 1,210 mm of rain a year. This makes it wetter than 92% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 90% of listed buildings.
It experiences an average of 37 freeze-thaw cycles a year, more than 67% of listed buildings. Of these, 19 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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