The Special Nature Reserve “Kraljevac” (RK) is located in the Autonomous Province of Vojvodina, in southern Banat. This first-category reserve covers an area of 264.3 ha and represents a natural item of exceptional importance. The reserve is characterized by significant geological heritage such as loess sections and dune relief, a lake with famous floating peat islands that form the physiology of this wetland, and very rare representatives of flora and fauna. The RK is characterized by the rich cultural heritage of the population living in South Banat. The different ethnic composition of the population and multiculturalism are the main sociocultural tourist motives of this protected area. The Deliblato Sands, known in Europe for their rare geological features, flora and fauna, are located in the immediate vicinity. This significantly increases the value of the RK. Quantitative methodology was used in the paper, which included interviewing respondents as a research technique. The research was conceived according to the Prism of Sustainability (PoS) model. For this sustainable tourism research, a total of 750 respondents (470 residents and 280 visitors) were surveyed. A written and online questionnaire was used in the survey of respondents. By using a questionnaire, respondents expressed their views on certain statements that were grouped into two categories. The claims refer to the natural and sociocultural factors of tourism development in this protected area. Both categories of tourism destination factors can significantly influence sustainable tourism. In addition, we examined the impact of sociocultural and natural factors on respondents’ satisfaction with sustainable tourism. The research results indicate that there is a significant influence of these factors on the satisfaction of residents and visitors with sustainable tourism. The results of this research can provide important information when planning the development of tourism in this protected area. Also, the results can help in the evolution of tourism development at the local, national and regional levels. The forms of tourism that could be central in the RK are scientific research, sports–recreational, ecotourism, bird-watching, events, cultural, gastronomic, and other tourism forms. These forms of tourism can provide environmental, economic and social benefits for this protected area as a tourism destination.

The Special Nature Reserve “Titelski Breg” (TB) is a protected area (PA) of category I, located in the AP of Vojvodina in the south-eastern part of Bačka. The reserve covers an area of 496 ha. A protection zone covering an area of 8643 ha has been established around the PA. The International Union for Conservation of Nature (IUCN) states that this PA is classified as a category IV habitat and species management area. Its good geographical and traffic position and close distance to Romania and Hungary, as well as the nation’s major cities, make this PA accessible to a sizable number of both domestic and foreign tourists. There are numerous plant and animal species in the reserve, which makes this area unique. The population living around this reserve has an exceptional and valuable cultural heritage, which represents significant complementary tourist motives. To examine the state of sustainable tourism (SuT) in TB and the impact of SuT on the satisfaction of the respondents (SoR), the PoS model of study was used. The quantitative methodology in this research included a questionnaire as the survey instrument for residents and visitors. There were 630 respondents altogether (400 locals and 230 guests). Four aspects of sustainability, economic, social, cultural, and institutional, were used to analyze the state of SuT in this PA. The study’s findings show that SuT significantly affected the SoR. Analyzing the role that additional protected areas may have in SuT can be supported by the research outcomes. Additionally, the proportion of each sustainability characteristic in SuT can suggest guidelines for national programs that aim to develop PAs and tourist development at the same time.