Drastically remodelled by the Bernese in the 16C, this construction of feudal origins, property of the city of Nyon since 1804, sports five different towers, each topped with a pepper box fortification. From the terrace, there is a pretty view of the Rive quarter and the Petit Lac (viewpoint indicator). The museum showcases a splendid collection of porcelain (1781-1813) from the famous manufacturer and 19C ceramics. Also on display are fine murals and wallpaper reproductions.