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Cof Cymru: National Historic Assets of Wales · Wales

Clogwyn Tower

Llannor, Gwynedd, Wales

A Grade II listed building in Abererch, Pwllheli, Llannor, Gwynedd, designated on 19 October 1971.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Clogwyn Tower, Llannor, Gwynedd, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Listed building, Grade II
Broad class
Gardens, Parks and Urban Spaces
Date of designation
19 October 1971
Locality
Abererch
Town
Pwllheli
Community
Llannor
Unitary authority
Gwynedd
Country
Wales
Coordinates
52.90709, -4.40159
Cadw reference
4321

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1795 map "To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most humbly inscribed by his obedient humble servant" (Llyfrgell Genedlaethol Cymru – The National Library of Wales).

Historical maps covering this location

  • 1795 · To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most… (Llyfrgell Genedlaethol Cymru – The National Library of Wales)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 134 Pwllheli (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

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This record in Cadw's own full report ↗

Cadw's description

The tower stands on the highest point of the dolerite ridge NE of Pwllheli and 1120m WNW of Abererch church.

The date of erection of the tower is not recorded, but it was probably built in the early C19 by the Jones family, owners of Ty Iocws, as a landmark and small lookout point with extensive views from St Tudwal's Islands in the W to the Traeth in the E, and N to the Yr Eifl range.

The diminutive tower is built of local dolerite rubble, approximately 1.8m in diameter and standing to c2.3m high, crowned by large stones set in an approximation to a crenellated parapet. Four iron stirrup hoops are set in the masonry to permit access through the gap in the parapet to the standing place at the top. The small size of the tower enhances the apparent grandeur of the rocky outcrop.

Included as an unusual example of an eye-catcher providing a conspicuous landmark in the area, built to provide a picturesque focal point in the landscape.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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