The municipal museum is located in Sonnaz Castle, historic home, which has, near the Town Hall, an exceptional view of Lake Geneva and the Swiss Jura. Permanent exhibitions: Marguerite Peltzer-Genoyer> one room of the museum, specially designed in 1998, presents the sculptures of Marguerite Peltzer-Genoyer (1897-1991). This German-born artist has lived in Thonon-les-Bains, where she had his studio. She bequeathed most of his works in the town of Thonon-les-Bains, Skippers> in another room, models and panels to explore the Lake Geneva's through the ages, the border history of smuggling> this exhibition tells the story from the seventeenth century customs and border Chablais, which experienced many upheavals. Discover also smuggled through stories and customs fraud.