Chillon Castle (French: Château de Chillon) is an island castle located on Lake Geneva (Lac Léman), south of Veytaux in the canton of Vaud. It is situated at the eastern end of the lake, on the narrow shore between Montreux and Villeneuve, which gives access to the Alpine valley of the Rhône. Chillon is amongst the most visited castles in Switzerland and Europe. Successively occupied by the house of Savoy then by the Bernese from 1536 until 1798, it now belongs to the State of Vaud and is classified as a Swiss Cultural Property of National Significance. The fort of Chillon, its modern counterpart, is hidden in the steep side of the mountain.

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