Phare de Pen-Men, Navigation lighthouse on Groix Island, France
The square stone lighthouse stands 27.66 meters tall with a focal height of 60 meters above sea level at the western point of Groix Island.
The initial 1794 lighthouse project failed due to unstable ground, leading to the construction of the current structure at a different location in 1836.
The structure received official recognition as a protected historical monument in December 2015, preserving its architectural features for future generations.
The lighthouse emits a beam visible up to 29 nautical miles through its 1000-watt halogen lamp system with four-panel lens optics.
The design changed from circular to square during construction to differentiate it from the nearby Belle-Île lighthouse.
Location: Groix
Inception: 1836
GPS coordinates: 47.64741,-3.50932
Latest update: June 6, 2025 00:38
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