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Cof Cymru: National Historic Assets of Wales · Wales

Privy tower at Porthamel

Llanidan, Isle of Anglesey, Wales

A Grade II listed building in Porthamel, Llanidan, Isle of Anglesey, designated on 20 May 1998.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Privy tower at Porthamel, Llanidan, Isle of Anglesey, 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
Domestic
Date of designation
20 May 1998
Locality
Porthamel
Community
Llanidan
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates
53.18714, -4.23683
Cadw reference
19885

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)
  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 105 Carnarvon (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)
  • 1919 · Sheet 41. Anglesey. (David Rumsey Map Collection, Stanford Libraries)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

Located to the S of Porthamel house, in the corner of the garden. The tower is set alongside a former road (now disused) leading up from the the Menai Strait.

Probably mid C19, used as a privy, but possibly built as an folly or observation tower, exploiting a commanding position overlooking the Menai Strait.

A square tower with tapering sides, walls of pink gritstone rubble. Single door to E side with pointed arch lintel. The walls of the tower are ruinous and the roof is missing. Abutting to the N is a garden wall which incorporates a pointed arch gateway.

Listed as an unusual, functional, garden structure, which forms part of a group with Porthamel house.

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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