Planned in the sense that it was originally destroyed, then rebuilt - so planned streets/layout; but built over the ruins of the original city. I mainly latched on to Paris, as I really liked the older maps of it, when it was walled - and it fit with what I was looking to do with this city almost exactly (which was very convenient, since I was drawing the layout for the city before looking at Paris). Unfortunately, for the person redesigning/building the city, moving it didn't seem as practical because it's near the mouth of the river. So rebuilding there would help defend the internal towns, since the raiders (similar to vikings) wouldn't be able to use the river to get deeper inland.