The Pally Gally ( last but one )
They must have had armies of people cutting the stones to size and shape. Then the reddish coloured flat courses are brick. You can see how beautifully the arches are made.
It dates from about the end of the first century, from when Bordeaux was Romano-Celtic (i.e. Welsh) and called Burdigala. Or maybe even Aber-pwll-llan-burdigala-glan-yr-afon.

Comments