Rosettes and Revelations Pt.1: The Holy City - Koen Gheuens and Cary Rapaport

[Mark Knowles]

I wish I could find the reference, but some time ago I read an article on diagrams vs maps and it was pointed out that in this time period diagrams were increasingly incorporating map-type features. 

Yes, it would be good if you can find evidence of diagrams which are not maps which show the map-like features that we see in the Voynich manuscript. I haven't seen any to the best of my knowledge.

The features that appears to be uniquely shared between the Voynich rosettes folio and medieval maps is the illustration of different, distinctive and separated buildings distributed over the page. When this is combined with the other map-like features it seems to be fit much more naturally in the category of maps than any other category. If someone could find common features that place it in another category of drawing then that would be interesting. It is true that you can find a variety of diagrams with connected circles in them, though not in this form nor nearly as numerous. However, a circle is a very simple mathematical shape, so I think it would be a mistake to read too much into the presence of that shape.