As a clearly defined and structured public institution, a public library is open to new activities in its work. Exhibiting activities enter a public library and enrich it with their content. A public library is transformed and becomes a centre of the cultural life of a town or a community. The aim of this thesis and study is to examine the coexistence of two acitivities of a different nature in one space, more precisely, the coming together of a public library and exhibiting activities, in the specific case of the Silvije Strahimir Kranjčević Library and its Prozori (Windows) Gallery in Zagreb; to examine the dynamics of their inter-relationship and to find out who the visitors of the gallery are, how they perceive it and how much they like it. The foundations of this thesis are laid by defining the basic terms: a public library and an exhibition. The study was carried out through a written survey, an online questionnaire sent by email, completely anonimously. The results of the study show that the users (visitors) are to a large extent familiar with the work of the gallery, follow its work and are pleased with it. This thesis and study show that a change occurs in a public library in which exhibiting activities become part of its regular work and something that is expected to be found on its premises. Through arts, a public library communicates with its users and visitors, accidental or intentional, and it becomes an open space for education as well as for reflection on and examination of social and other circumstances.