Chillon Castle () is an island castle located on Lake Geneva, 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 medieval 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 de Chillon, its modern counterpart, is hidden in the steep side of the mountain. Etymology According to the Swiss ethnologist Albert Samuel Gatschet, the name Chillon derives from the Waldensian dialect and means "flat stone, slab, platform". The name Castrum Quilonis, attested from 1195, would, therefore, mean "castle built on a rock platform. Introduction The castle of Chillon is built on the island of Chillon, an oval limestone rock advancing in Lake Geneva between Montreux and Villeneuve with a steep side on one side and on the other side the lake and its steep bottom. The placement of the castle is strategic: it guards the passage between the , which allows access to the north towards Germany and France, and the Rhone valley, a quick route to Italy, and offers a viewpoint over the Savoyard coast on the opposite side of the lake. A garrison could thus control (both militarily and commercially) access to the road to Italy and apply a toll. Chillon has been a military site since the Roman period and the development of the current castle spans three periods: the Savoy Period, the Bernese Period, and the Vaudois Period. History Roman period Chillon began as a Roman outpost, guarding the strategic road through the Alpine passes. Objects dating back to Roman times were discovered during excavations in the 19th century, as well as remains from the Bronze Age. From a double wooden palisade, the Romans would have fortified the site before a square donjon was added in the 10th century. Sources from the 13th century link the possession of the Chillon site to the Bishop of Sion. Savoy period The oldest parts of the castle have not been dated definitively, but the first written record of the castle was in 1005AD. It was built to control the road from Burgundy to the