Twr Mawr Llanddwyn Lighthouse

The Twr Mawr Lighthouse features a conical stone tower rising 10 meters high with small windows on its northeast side and upper floors.

Built in 1845 to guide vessels through the Menai Strait, the lighthouse maintained maritime operations until its deactivation in 1975.

The structure exhibits architectural elements common to Anglesey windmills, reflecting the regional building traditions of nineteenth-century Welsh maritime structures.

Located at coordinates 53.135278 latitude and -4.415556 longitude, the Grade II listed building stands at an elevation of 17 meters above sea level.

The lighthouse contained six Argand lamps with a silver-plated reflector and a Fresnel lens from 1861, providing illumination for 7 nautical miles.

Location: Rhosyr

Inception: 19 century

Elevation above the sea: 17 m

Height: 10 m

GPS coordinates: 53.13528,-4.41556

Latest update: March 3, 2025 23:50