Change in the paradigm of the documentary heritage also leads to a change in the concept of memory institutions, whereby the most important function of a memory institution becomes active participation in the process of creating the collective memory. Audience engagement is important in this process. Evaluating the reception of documentary heritage communication allows us to assess the involvement of cultural users in cultural communication. Data from a study of the reception of visitors to an exhibition of one of the most important documents to the country’s statehood, the Act of 16 February, conducted using quantitative methods, showed that visitors to the museum where the Act of 16 February was on show rate the exhibition very highly and contribute to its communication in social networks and by oral communication.