::::We don't need to have detailed information in the history of Paris section but just a brief summary. I agree with , if this section is too long, most people will not read this part, it will likely have the oposite effect that what you want. 
 :::: I think that London is a good example of how the history section of Paris should be in length and informations. By reading it, I understand better how the city grew, the major change that happened over the centuries. This is pretty much unlike in Paris article where I get many informations about things like the place when and where was imprisoned Louis XVI but very few about the urban history of Paris.