TreeAlive
‹ Cof Cymru: National Historic Assets of Wales, Wales

Cof Cymru: National Historic Assets of Wales · Wales

Llanddwyn Lighthouse

Rhosyr, Isle of Anglesey, Wales

A Grade II listed building in Llanddwyn Island, Rhosyr, Isle of Anglesey, designated on 29 March 1996.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Llanddwyn Lighthouse, Rhosyr, 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
Maritime
Date of designation
29 March 1996
Locality
Llanddwyn Island
Community
Rhosyr
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates
53.13519, -4.41555
Cadw reference
18036

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 1883 map "Watershed map England, Wales 3." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 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 · 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

In an elevated position at the SW extremity of Llanddwyn Island.

The site marks the W entrance to Menai Strait, and a light was first exhibited here in 1846. The tower itself however is probably a construction of the early C19 (documentary sources suggest a date of between 1800 and 1823) which served originally as a day-mark, and was then adapted for use as a lighthouse with the construction of a lean-to lantern room. The lighthouse was maintained as a local light by a private trust and was used until the 1970s. Restoration in progress.

The circular tower is lime-washed render over rubble, with renewed shallow conical slate roof. 4-stage tower with doorway in N side flanked by small windows, and a single window on each of two floors above it, the window detail renewed. Lean-to lantern room on S side, with large windows overlooking the sea. The tower is enclosed by low rubble walls, which also form the parapets for the inclined access to its elevated rock-site.

A good surviving example of an early C19 day-mark, adapted for later use as a lighthouse and part of a group with the lighthouse keepers' and pilots cottages nearby.

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
See your own family's places on a living map