Cromwell's Bastion, Castlehill, Aberdeen is a Grade C listed building in the Aberdeen City local planning authority area, Scotland. First listed on 12 January 1967. Fortification.

Cromwell's Bastion, Castlehill, Aberdeen

WRENN ID
stubborn-doorway-ridge
Grade
C
Local Planning Authority
Aberdeen City
Constituency
Aberdeen South MP: Douglas Lumsden (Con)
Country
Scotland
Date first listed
12 January 1967
Type
Fortification
OS grid reference
NJ 946 063
Coordinates
57.14835, -2.08988
Source
Historic Environment Scotland listing

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

Description

Cromwell's Bastion, located on Castlehill in Aberdeen, dates back to 1651-1652 and consists of surviving fragments of a fort built during the Cromwellian period. The structure features a four-sided bastion on the southeast side, with straight wall sections extending to the east and south. It is constructed from rubble and large boulders, topped with later flat coping stones, and has roughly dressed quoins at the angles of the bastion. The bastion is prominently situated to the east of Castle Street, overlooking the Harbour to the south. To the north and west, there is a late 20th century embankment and concrete pavement.

Local climate

Cromwell's Bastion, Castlehill, Aberdeen receives an average of 880 mm of rain a year. This makes it wetter than 64% of listed buildings in the UK. Its exposure to wind-driven rain is greater than that of 82% of listed buildings.

It experiences an average of 8 freeze-thaw cycles a year, fewer than 93% of listed buildings. Of these, 6 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.

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