Niewidzialny Poznań. Badania wizualne nad działaniami oddolnymi mieszkańców miasta

The introductory part of the article presents the premises of a research project called “Invisible City” which was initiated at the Institute of Sociology, Adam Mickiewicz University. The term “invisible city” denotes grassroots actions of city residents that usually go unnoticed in the official institutionalized perspective and are also overlooked by other urban inhabitants. The next part of the article shows such actions in Poznań referring to abundant photographic material collected in the database of the discussed project. The last part presents the grassroots actions of the actors of the invisible city as innovative actions. For this purpose the author characterizes the concept of social innovations and identifies their characteristic features which he then ascribes to the grassroots actions of the residents of Poznań.