Montreuil-sur-Mer has seen every invasion and war that has marked northern France.
It is true to say that its location on a spur overlooking three valleys and the former control it exerted on the sea ans the road that stretched from Normandy to Flanders cold not but give the town a military vocation.
More than three kilometres long, its walls are oneof the largest bastioned structures in France.
Almost intact, it is a remarkable witness to the evolution of the fortification over seven (...)