An investigation into the representation of public space over the 20th century. The conceptual apparatus is rich of food for thought according to some of the most influential personalities in this field, starting from the Chtcheglov's Formulary for a new urbanism, through the Internationale Situationniste, and also passing for Henry Lefbvre, David Harvey and Jane Jacobs, who have convinced me that it's of primary importance, today more than ever, to take and express a strong stand.