Plynlymon Hall including Caerleon is a Grade II listed building in the Ceredigion local planning authority area, Wales. First listed on 24 November 1987. Harbour/pier.

Plynlymon Hall including Caerleon

WRENN ID
small-spandrel-raven
Grade
II
Local Planning Authority
Ceredigion
Constituency
Ceredigion Preseli MP: Ben Lake (PC)
Country
Wales
Date first listed
24 November 1987
Type
Harbour/pier
Address
Plynlymon Hall including Caerleon, Aberystwyth
OS grid reference
SN 583 823
Coordinates
52.4208, -4.08435
Source
Cadw listing

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

Description

Plynlymon Hall, which includes Caerleon, is a Gothic-inspired building featuring a symmetrical design with four storeys and a basement. The facade is constructed from snecked rubble and has three window bays, with freestanding banding. The roof is slate, complemented by stock brick chimney stacks and moulded brick eaves. The windows are horned sash types, with stilted heads on the third floor arranged in pairs and triplets. There are three-storey splayed bay windows topped with large dentil cornices and foliated capitals, except for Caerleon, which has cylindrical shafts and trefoil punched aprons. The central second-floor windows have blind pointed heads, and the central entrances are arched with fanlights above half-glazed and panelled doors. The basement has been partially blocked up.

Local climate

Plynlymon Hall including Caerleon sits in one of the wettest parts of the UK, with an average of 1,290 mm of rain a year. This makes it wetter than 94% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 91% of listed buildings.

It experiences an average of 31 freeze-thaw cycles a year, fewer than 61% of listed buildings. Of these, 14 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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  • Detailed attributes — period, style, materials, features
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  • Radon risk assessment
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