Geographical analysis of Rosettes

[ololololo]

I have a different and very detailed map interpretation of the page. However some things are similar like what you call "Main City" I think represents Milan. What you call "Lake Water Spring" I think represents the lakes around Lake Lucerne.
You can probably glean my interpretation from my writings here and on ciphermysteries.com and the presentation I did at the Abbazia di Santi Nazzaro e Celso which you can download.

Could you send me a link to your research?
However, I did not identify the city because the layout I received is typical. This is how most cities in Europe are built. I also think that it must be a very important city, and it's unlikely that the author would draw his hometown or the nearest major city. Milan is certainly a possibility, but it could have been anyone. However, finding a suitable location in the Alps seems justified.