Chillon: A castle in Vaud, Switzerland, at the eastern end of Lake Geneva. It covers an isolated rock on the edge of the lake, and is a very picturesque combination of semicircular and square towers and machicolated curtains grouped about a higher central tower. It is famous in literature and song, especially as the prison of Bonnivard, a defender of Swiss liberties against the Duke of Savoy in the Sixteenth Century.

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