Trezien lighthouse, Maritime lighthouse in Plouarzel, France.
The Trezien lighthouse reaches 37.2 meters in height and stands 500 meters inland from the shore, featuring granite construction throughout its structure.
The lighthouse began operations in 1894 following the grounding of a French Navy torpedo boat, leading authorities to enhance maritime safety in the area.
The lighthouse guard house contains 15 educational panels detailing maritime navigation principles developed with the Iroise Marine Natural Park and local organizations.
Visitors need to climb 182 stone steps to reach the top gallery, where they can observe both the coastline and two different types of granite.
The lighthouse signal consists of two short white flashes followed by one longer flash, guiding vessels through the Four Channel navigation route.
Location: Plouarzel
Inception: 1892
Elevation above the sea: 90.9 m
Height: 37.2 m
GPS coordinates: 48.42351,-4.77892
Latest update: June 2, 2025 00:57
French lighthouses line approximately 3,400 miles (5,500 km) of coast, from the English Channel to the Mediterranean Sea. These maritime structures, built between the 17th and 20th centuries, occupy strategic locations on rocky promontories, islands, and sometimes in open sea. Constructed from granite, limestone, or masonry, they reflect changes in building techniques and the emphasis on maritime safety. Among the most notable are the Cordouan lighthouse, located offshore of the Gironde estuary and listed as a UNESCO World Heritage site, and the Vierge island in Brittany, which, at 272 feet (82.5 meters), is the tallest stone tower in Europe. The Jument and Vieille lighthouses, situated off Ouessant and Raz de Sein, demonstrate the technical challenges of building at sea, while those at Cap Ferret, Calais, and Ploumanac'h serve as coastal landmarks for over a century. Most of these installations remain operational, and several are open to visitors, offering insights into their interior architecture and the living conditions of their keepers.
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