Retaining Walls of South Garden 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. Retaining wall.

Retaining Walls of South Garden at Fonmon Castle

WRENN ID
solemn-wattle-magpie
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
Retaining wall
Address
Retaining Walls of South Garden at Fonmon Castle, Barry, Rhoose
OS grid reference
ST 047 680
Coordinates
51.40334, -3.37068
Source
Cadw listing

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

Description

The retaining walls of the south garden at Fonmon Castle are made of castellated limestone rubble. They define the main south terrace of the castle garden and support it against the east ravine. At the highest corner near the beech tree, there are buttresses that have been added recently.

Local climate

Retaining Walls of South Garden 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

Sign in or create a free account to unlock:

  • 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
Create free account

Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.

Similar buildings

The closest matches to this building from all 493,000 UK listed buildings, by architecture, period and materials.

See all similar buildings →

this building   1 similar   nearby listed buildings

Nearby listed buildings

  1. Stable Block at Fonmon Castle Grade II 47 m
  2. Fonmon Castle Grade I 61 m
  3. Watchtower at Fonmon Castle Grade II* 89 m
  4. Walls of Walled Gardens at Fonmon Castle Grade II 136 m
  5. East Hall (aka Rosedene) Grade II 420 m
  6. Walls surrounding Fonmon Pond including the Bridge and Weir and Well at Fonmon Grade II 445 m
  7. Fonmon Well Grade II 448 m
  8. Kenson Bridge Grade II 813 m
  9. Cliff Farmhouse Grade II 934 m
  10. Telephone Call-box in centre of Village at junction with Croft John Grade II 1.2 km