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Latitude: 53.1352 / 53°8'6"N
Longitude: -4.4155 / 4°24'55"W
OS Eastings: 238504
OS Northings: 362508
OS Grid: SH385625
Mapcode National: GBR 5B.6FVY
Mapcode Global: WH43C.4GMB
Plus Code: 9C5Q4HPM+3Q
Entry Name: Llanddwyn Lighthouse
Listing Date: 29 March 1996
Last Amended: 19 October 1998
Grade: II
Source: Cadw
Source ID: 18036
Building Class: Maritime
Also known as: Twr Mawr, Llanddwyn
Tŵr Mawr
Twr Mawr
ID on this website: 300018036
Location: In an elevated position at the SW extremity of Llanddwyn Island.
County: Isle of Anglesey
Community: Rhosyr
Community: Rhosyr
Locality: Llanddwyn Island
Traditional County: Anglesey
Tagged with: Lighthouse Daymark
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.
External links are from the relevant listing authority and, where applicable, Wikidata. Wikidata IDs may be related buildings as well as this specific building. If you want to add or update a link, you will need to do so by editing the Wikidata entry.
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