This lighthouse was damaged during World War II; repairs were made later. The original 1-story stone keeper's house now houses a small museum. This lighthouse marks the Pointe de Trézien, the traditional dividing point between La Manche (the English Channel) and the Atlantic Ocean. In addition to being a general navigation light, it forms a range with the Phare de Kermorvan to guide ships into the southern entrance of the Chenal du Four, the shipping route between the Île d'Ouessant and the mainland.

ARLHS Number: FRA-750
Admirality Number: A1873.9
NGA Number: 113-0072
Build: 1894
Construction: stone
Height: 37 m
GPS: 48 25 28 / -4 46 48