This thesis paper explores the local residents' attitudes on tourism development in the town of Rovinj. Furthermore, it examines the attitudes of people responsible for planning destination development in tourism. Eighty questionnaires and eight in-depth interviews have been collected for the purpose of this research paper. The results of the research show that the local residents support tourism development of Rovinj. Moreover, even though their perception on the effect of tourism development on the environment is not that positive, they believe that tourism is beneficial for both the economic system and their society in general. Positive results are also reflected in the attitudes of the participants responsible for planning tourism development, which correspond to those of the local residents as well. Not only do these results reveal the attitudes of the local residents on tourism development, but they also demonstrate the correlation of their views with the earlier studies, as shown in the literature preview. Finally, there is hope that this paper would serve as an inspiration in conducting other similar research on questioning the attitudes of the local residents and, hence, underline the importance of their inclusion in tourism development.