Lucens Castle's strategic location allowed it to control the Broye valley, which was an important transit corridor. Starting in the Middle Ages and until 1536 it was a residence of the Bishop of Lausanne and served to control the Bishop's land in the Broye valley. During the 12th century, the castle was repeatedly destroyed and rebuilt. In 1476, it was destroyed by the Swiss Confederation. In 1536 the valley and the surrounding territory were conquered by Bern. It became the seat of a Bernese bailiwick at the same time. In 1542, the vogt of Moudon moved into the castle.
The castle was enlarged between 1579–86 and served as an arsenal and fortress on the border to Fribourg. In 1798, the Bernese were forced out and the Canton of Léman was formed. Shortly thereafter, the castle became the property of Canton, who sold it 1801 to private individuals. In 1925, it was converted into a Swiss Reformed institute for girls. Between 1965-70, it was the seat of the Conan Doyle Foundation, and is now in private hands.
References:The Château du Lude is one of the many great châteaux of the Loire Valley in France. Le Lude is the most northerly château of the Loire Valley and one of the last important historic castles in France, still inhabited by the same family for the last 260 years. The château is testimony to four centuries of French architecture, as a stronghold transformed into an elegant house during the Renaissance and the 18th century. The monument is located in the valley of Le Loir. Its gardens have evolved throughout the centuries.