North Base Tower, Ballymulholland, Magilligan, Limavady, Co Londonderry is a Grade B2 listed building in the Causeway Coast and Glens local planning authority area, Northern Ireland. First listed on 28 March 1975.
North Base Tower, Ballymulholland, Magilligan, Limavady, Co Londonderry
- WRENN ID
- final-lintel-vetch
- Grade
- B2
- Local Planning Authority
- Causeway Coast and Glens
- Constituency
- East Londonderry MP: Mr Gregory Campbell (DUP)
- Country
- Northern Ireland
- Date first listed
- 28 March 1975
- Irish grid reference
- C 670 343
- Coordinates
- 55.1517, -6.94914
- Source
- NI Environment Agency listing
Description
The North Base Tower at Ballymulholland is a circular tower constructed between 1820 and 1839 as part of the first Ordnance Survey of Ireland, under the direction of Lieutenant Colby. It played a vital role in establishing a triangulation network alongside similar towers referenced as HB02/09/008 and HB02/10/012. The tower comprises a circular basalt wall approximately 6.0 metres in diameter, standing to an average height of 900mm. It is finished with a sandstone coping and surmounted by a metre-high, white-painted cast iron railing. The structure is of industrial archaeological interest and holds authorship, regional, and international significance. It is currently owned by the local government and retains its original function as a tower.
Local climate
North Base Tower, Ballymulholland, Magilligan, Limavady, Co Londonderry sits in one of the wettest parts of the UK, with an average of 1,470 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 2 freeze-thaw cycles a year, fewer than 99% of listed buildings. Of these, 1 follows 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
Sign in or create a free account to unlock:
- No EPC on record for this property
- No sale records on file
- No related consent applications matched
- Detailed attributes — period, style, materials, features
- No flood data for this area
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
Nearby listed buildings
- Presbyterian Church, Seacoast Road, Magilligan, Limavady, Co Londonderry
- 16 Point Road, Drumahorgan, Magilligan, Limavady, Co Londonderry
- Thatched House, 392 Seacoast Road, Magilligan, Limavady, Co Londonderry, BT49 0LA
- Thatched House, 360 Seacoast Road, Magilligan, Limavady, Co Londonderry, BT49 0LA
- Former Thatched House., Seacoast Road, Ballymultimber, Magilligan, Limavady, Co Londonderry
- Thatched House., The Castle, Curragh Road, Magilligan, Limavady, Co Londonderry
- Thatched House., 326 Seacoast Road, Magilligan, Limavady, Co Londonderry
- 72 Duncrun Road, Bellarena, Limavady, Co Londonderry
- Former School Adj. St Cadan’s Church, Duncrun Road, Magilligan, Limavady, Co Londonderry
- St Cadan’s C of I Church, Duncrun Road, Magilligan, Limavady, Co Londonderry