Phare de Tréhiguier, lighthouse in Morbihan, France
Phare de Tréhiguier is a lighthouse in Pénestin at the mouth of the Vilaine River, its white cylindrical structure topped with a lantern room visible from a distance. Inside, a museum opened in 1995 displays the history of mussel farming through exhibits, photographs, historic tools, and films showing traditional and modern cultivation methods.
The lighthouse was completed in the early 1880s and began operating in 1882 to guide ships on the Vilaine River and prevent groundings. Automated in 1971, it ceased navigation duties in 1989 after river channel shifts reduced its effectiveness.
The museum inside the lighthouse showcases mussel farming, a traditional practice that has shaped local identity for generations. Visitors can see photographs and tools used by mussel farmers and learn how this work remains central to the community's connection with the sea.
The site is free and accessible with a spiral staircase leading to an upper balcony offering wide views of the Vilaine estuary. Audio-visual displays and exhibits are designed for all ages, allowing visitors to explore at their own pace.
The term mytiliculture refers specifically to mussel farming, and the museum preserves knowledge about the plankton-rich waters that feed these shellfish. Visitors also receive recipes for preparing fresh mussels using local methods.
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