Texts (some in French)
Paris map in 1210
Maps and photos
right bank - left bank
Plaques
Aspects and layouts

This is a key picture to understand why the wall has survived in so many places until now. Clearly, it is made of big, neat, regular blocks on each side, and in between a filling of irregular stones and mortar.

The wall was not good for what Parisians did with older buildings: use the stones as a quarry. The wall could only be used as a party wall. On each side houses could lbe built agains it. Thus enclosed by new buildings, the wall has been preserved throughout the centuries