Author 'Almarie' : Has Plouezoc'h (29) a megalithic site dating back to the 5th millennium BC. It would have been built before the pyramids. Length of about 72 meters wide, 25 meters, about 6 meters high, it has 11 burial chambers. I didn't even know that such a monument still existed in France. It can be visited, and it's well worth it.