unknown castle in France/ Belgium

[LuckyStrike23]

this pic was among a small "1. Panzerdivision" lot. I suppose it was taken in the western campaign 1940. Does anyone recognize this site? My first thought was Besancon, but I could not proof it. Below is the way of the Division in 1940.

[Remco]

This is Chateau de Joux (France)

http://nl.wikipedia.org/wiki/Kasteel_van_Joux

[LuckyStrike23]

many thanks