My brother-in-law sent me these pictures from Vitrolles, France. They would have been taken somewhere with in a two hours drive from there.
We were both wondering why in the interior of this tower he saw had all these little cubbies. Sorry I don't know any more details about the tower, nor do I have outside pictures ( I wish I did. )
I would guess that it was just a way to save on material, but I would love to know for sure why the tower was built this way, or perhaps what it is called so that I can more easily find info on it.