Guess the French region with the help of this clue: café au lait on set?

In which of France's 13 regions was this photo taken?

This 14th Century French fort was used as a film location for the 1958 film The Vikings

This French fort was a filming location for the likes of Tony Curtis and Kirk Douglas for the 1958 American film The Vikings, directed by Richard Fleischer.

It was built in the 14th Century and the fort's dungeon dates from 1365–1370. 

Can you guess where it is located?

Click to show answer
A) Fort La Latte, or the Castle of the Rock Goyon, in the region of Brittany
An alternative view of the mystery fort