This master's thesis deals with the analysis of the Udruga za održivi razvoj Osejava (engl. Organization for Sustainable Development Osejava) and its impact on the local community of Makarska. Theoretical frameworks of labor anthropology and anthropology of place and space are applied in the thesis, with a focus on volunteer actions and activities of the organization. The aim is to explore how the organization contributes to the local community and how its actions affect spatial changes caused by tourism, the main activity of Makarska. Field research included semi-structured interviews, participant observation, and critical analysis of relevant sources. The research results indicate that the UZOR Osejava organization has a positive impact on the local community, despite challenges and limitations. Organization members see their future in professionalization, which would enable more effective action and participation in EU projects. Citizens generally support the organization's activities, although some express their support only in private conversations due to political and social pressures. One of the key aspects of the research is the analysis of the environmental awareness of the local population and the role of the organization in promoting such environmental initiatives. Special attention is given to controversies such as the devastation of Romana beach and the project of building the sport fields on Osejava, which have received media attention and sparked public reactions across the country. In conclusion, the thesis emphasizes the importance of further research into the organization's impact on the development of the local community and the cultural dynamics of Makarska.