Walls of Walled Gardens at Fonmon Castle is a Grade II listed building in the Vale of Glamorgan local planning authority area, Wales. First listed on 30 September 2004. Garden wall. 1 related planning application.

Walls of Walled Gardens at Fonmon Castle

WRENN ID
waning-spandrel-bramble
Grade
II
Local Planning Authority
Vale of Glamorgan
Constituency
Vale of Glamorgan MP: Kanishka Narayan (Lab)
Country
Wales
Date first listed
30 September 2004
Type
Garden wall
Address
Walls of Walled Gardens at Fonmon Castle, Barry, Rhoose
OS grid reference
ST 046 681
Coordinates
51.40426, -3.37197
Source
Cadw listing

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

Description

The walls of the walled gardens at Fonmon Castle are constructed from local limestone rubble and vary in height between about 2 meters and 3 meters. Some sections are capped with flat coping stones, while others are partly broken at the tops. The walls differ in thickness, and some may be older than others. They enclose three main garden compartments that are continuous with each other. To the north of the house is a long narrow garden, to the north-west is a large square garden, and to the west is a later narrow garden. The main north and east walls are particularly thick and may relate to a medieval bailey or be built from stone taken from the medieval walls.

Local climate

Walls of Walled Gardens at Fonmon Castle sits in a wetter-than-average part of the UK, with an average of 1,160 mm of rain a year. This makes it wetter than 89% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 95% of listed buildings.

It experiences an average of 13 freeze-thaw cycles a year, fewer than 87% of listed buildings. Of these, 5 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
  • Related listed building consents — 1 application
  • 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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Nearby listed buildings

  1. Fonmon Castle Grade I 86 m
  2. Stable Block at Fonmon Castle Grade II 117 m
  3. Retaining Walls of South Garden at Fonmon Castle Grade II 136 m
  4. Watchtower at Fonmon Castle Grade II* 222 m
  5. East Hall (aka Rosedene) Grade II 545 m
  6. Fonmon Well Grade II 559 m
  7. Walls surrounding Fonmon Pond including the Bridge and Weir and Well at Fonmon Grade II 560 m
  8. Kenson Bridge Grade II 776 m
  9. Cliff Farmhouse Grade II 855 m
  10. Telephone Call-box in centre of Village at junction with Croft John Grade II 1.2 km