This study advocates the thesis in a broadly understood genre of Early Modern Age urban historiography that there was inherently present, alongside the positive realistic level of communication, a normative utopian level, which mediated a vision of the ideal urban republic. The author supports this thesis through textual analysis and the comparison of urban historiographic texts with contemporary utopian works. The study further establishes that the image of the perfect mediaeval and Early Modern Urban Community, characterized by shared values and opinions, harmony, unity and order, had been influenced by Plato and Aristotle's deliberations on an ideal political and social order.