Climb the 182 steps of the Trézien Lighthouse to enjoy an unforgettable panorama of the Molène archipelago and the island of Ouessant
Come and see the Iroise Sea and its islands as you’ve never seen them, while enjoying the history and evolution of the Trézien lighthouse and maritime navigation over the centuries.
Visit the roundabout path and the caretaker’s house where you can learn all about the Four Channel.