The purpose of this study is to gain insight into the factors that contribute to the development of citizens' museum activities. As main method of research, we used questionnaires and interviewed representatives of citizens' groups involved in the preservation of the local natural and historical heritage. This investigation led to the following results. first, the number of active people and the financial scale of the citizens' group influence citizen participation in the planning and the explanations, while the group's field of activity influences participation in research work and preservation. Secondly, in order to encourage the involvement of citizens in museum activities, communication and cooperation between administrative and educational organs and local residents and groups is important as well as proper support for the activities.
