castle is built on a narrow hill overlooking the Grésivaudan
valley eastward and is protected East and South by the gorge
of a creek. It was the largest castle of the
oldest part (the keep) is supposed to have been erected in the
first half of the 12th century by the "Dauphin"
Guigues the 4th.
scale model is based on a detailed survey of the year 1339.