The walls go up (900-1325)
The walls move outward (1325-1600)
The walls come down (1600-1750).
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Walled towns and the shaping of France : from the medieval to the early modern era by Michael Wolfe. ISBN 9780230608122. Published by Palgrave Macmillan in 2009. Publication and catalogue information, links to buy online and reader comments.
