Trends in tourism show that more and more people accept the idea of an active and exploratory vacation, which includes visits to natural and cultural sights and rarities. Protected areas are extremely attractive locations for the growing demand and are powerful market brands that in the visitor's consciousness create an image of intact but accessible nature including an infrastructure that will meet all their needs. According to the research topic set out in the title, the purpose of the paper is to explore the features and particularities of the area, both from the aspect of natural and cultural heritage, while the aim of the work is to point to the importance and value of the area and to the potential of development and tourist valorisation. The paper seeks to explore and find out whether there are any grounds for tourist valorisation, which are the key issues and whether there is interest or support from competent institutions. Furthermore, the paper poses the question of the possibility of successful cooperation of tourism and nature protection. The results of the conducted research are presented through the synthesis of key conclusions derived from the information collected from the semi-structured interviews, in the form of a SWOT analysis as well as through a comparative analysis of good practice examples and show that the subject area has considerable potential for tourist valorisation of both natural and cultural heritage as well as for the development of different selective forms of tourism based on natural and cultural heritage. Given that the area of the river Mirna is an important area for migration, wintering and nesting of aquatic birds, there is a possibility for developing the birdwatching tourism in the area, a selective form of tourism with the greatest potential, highly developed abroad, but still insufficiently recognized and developed in our areas. In the process of tourism valorisation of natural and cultural heritage, it is necessary to pay great attention to their preservation and protection, which is also the first step in valorisation, and to work together to educate and raise awareness of the value and importance of heritage for all of us, considering its fragility and sensitivity in relation to numerous impacts.