Île de Sein
The Île de Sein is a Breton island in the Atlantic Ocean, off Finistère, eight kilometres from the Pointe du Raz, from which it is separated by the Raz de Sein. Its Breton name is Enez-Sun. The island, with its neighbouring islets, forms the commune of Île-de-Sein in the Finistère department of Brittany in north-western France. Inhabitants of Île-de-Sein are called in French Sénans.
Lying on the sea routes going south from the English Channel, Sein is well known for the dangers of its waters, the Chaussée de Sein, a vast zone of reefs stretching more than 30 miles from east to west, requiring numerous lighthouses, beacons, and buoys. The lighthouses near the reef include Ar Men, La Vieille and Tévennec.
History
There are two megalithic menhirs on the island, which is flat and treeless.It is mentioned by the Roman geographer Pomponius Mela.
The island women used to wear a black headdress, and in the past, they had a reputation for enticing sailors onto the rocks by witchcraft. In the past, it was also known for its wreckers.
During World War II, German forces occupied the island. The Île de Sein lighthouse, built in 1839 at the north-western end was destroyed - it was later rebuilt in 1952. After hearing General de Gaulle's call to resistance during World War II in his [Appeal of June 18|appeal to the French on 18 June 1940], every male inhabitant aged between 14 and 54 set sail in their fishing boats for Britain to join the Free French forces. For this, on 1 January 1946, the community was awarded the high honour of the Order of the Liberation.
During the 1960s, French artists Maurice Boitel and Jean Rigaud painted on the Île de Sein. It is featured in the 1995 French film Élisa.
In December 2025, an ancient undersea wall was discovered close to the island. Researchers speculate that a corresponding settlement lost to rising sea levels would have been memorable to local peoples, and may have led to the myth of Ys.