Three Sisters Meridian Pillars, Waterside Street, Largs is a Grade B listed building in the North Ayrshire local planning authority area, Scotland. First listed on 14 April 1971. Pillar.

Three Sisters Meridian Pillars, Waterside Street, Largs

WRENN ID
nether-baluster-nightshade
Grade
B
Local Planning Authority
North Ayrshire
Constituency
North Ayrshire and Arran MP: Irene Campbell (Lab)
Country
Scotland
Date first listed
14 April 1971
Type
Pillar
OS grid reference
NS 207 593
Coordinates
55.7939, -4.86099
Source
Historic Environment Scotland listing

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

Description

The Three Sisters Meridian Pillars, built in 1808 for Sir Thomas Brisbane, an astronomer, are located on Waterside Street in Largs. These pillars are constructed from rubble and have a square plan. They feature droved, squared rubble quoins and are oriented roughly east-west, situated on a motte. The central pillar is topped with a pediment-shaped stone, while the flanking pillars each have three upright slabs arranged in a gun-sight formation.

Local climate

Three Sisters Meridian Pillars, Waterside Street, Largs sits in one of the wettest parts of the UK, with an average of 1,420 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 95% of listed buildings.

It experiences an average of 40 freeze-thaw cycles a year, more than 77% of listed buildings. Of these, 20 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.2°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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