The Colonnade is a Grade II* listed building in the Gwynedd local planning authority area, Wales. First listed on 14 January 1971. Colonnade.
The Colonnade
- WRENN ID
- under-casement-curlew
- Grade
- II*
- Local Planning Authority
- Gwynedd
- Constituency
- Dwyfor Meirionnydd MP: Liz Saville Roberts (PC)
- Country
- Wales
- Date first listed
- 14 January 1971
- Type
- Colonnade
- Address
- The Colonnade, Portmeirion, Penrhyndeudraeth
- OS grid reference
- SH 589 371
- Coordinates
- 52.91353, -4.09864
- Source
- Cadw listing
Description
The Colonnade is an impressive single-storey structure built in the Georgian Gothic style, featuring a balustraded parapet made of Bath stone ashlar. It has 16 slender columns and a semi-circular projecting bow at the center. At both ends, there are solid pavilions with archways that have depressed pointed arches, with the left archway being blind. The pavilions are topped with balustrades that are pierced on the sides and have turned balusters in the center. Each pavilion is adorned with stone ogee domes topped with ball finials. Behind the central projection, there is a raised rear wall that is surmounted by three large urns. Inside, at the center of the rear wall, is a stone ogee arched niche that holds a painted northern-Renaissance style angel sculpture, flanked by swagged cartouches. The Colonnade sits on a revetted rubble plinth, with a flight of rubble and slate steps leading up to it from the lawn to the south of the Central Piazza.
Local climate
The Colonnade sits in one of the wettest parts of the UK, with an average of 1,490 mm of rain a year. This makes it wetter than 98% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 97% of listed buildings.
It experiences an average of 32 freeze-thaw cycles a year, fewer than 60% of listed buildings. Of these, 15 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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