Napier Mausoleum, Castle Street, Dumbarton is a Grade C listed building in the West Dunbartonshire local planning authority area, Scotland. First listed on 31 January 1984. Mausoleum.

Napier Mausoleum, Castle Street, Dumbarton

WRENN ID
second-pier-vetch
Grade
C
Local Planning Authority
West Dunbartonshire
Constituency
West Dunbartonshire MP: Douglas McAllister (Lab)
Country
Scotland
Date first listed
31 January 1984
Type
Mausoleum
OS grid reference
NS 398 751
Coordinates
55.94295, -4.56664
Source
Historic Environment Scotland listing

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

Description

The Napier Mausoleum, dated 1846, is a simple rectangular-plan Gothic structure located within the cemetery walls to the east of the church in Dumbarton. It is constructed of droved ashlar with polished dressings. The entrance is situated in the west wall, featuring a pointed-headed opening with a hood mould and nook shafts. Above the entrance, the coping is raised. Inside, the walls are arcaded, with inscribed slabs positioned below the arches.

Local climate

Napier Mausoleum, Castle Street, Dumbarton 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 92% of listed buildings.

It experiences an average of 47 freeze-thaw cycles a year, more than 89% of listed buildings. Of these, 26 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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