According to the definition of the International Union for Conservation of Nature, “protected area is a clearly defined area that is recognized for its purpose and managed with the aim of permanently preserving all nature, ecosystem services it provides and the associated cultural values, legally or in some other effective way.” To a greater or lesser extent, all countries of the world have established their national parks and other forms of protected areas to ensure long-term protection of natural resources and contribute to efforts of preserving global biodiversity, and so has the Republic of Croatia. Protected area management is a complex and demanding process which, if carried out thoughtfully and adapted to the conditions in which it takes place, usually gives results and contributes to the improvement of nature. The lack of financial resources to achieve the goals of protected areas creates a significant problem and the management of protected areas is turning to tourism and promotion, while the protection and preservation of locality is put in second place. Tourism is often seen as a viable option for income generation. All this results in unsustainable development of tourism in protected areas. Demand for nature-based tourism has been on the rise in recent decades and, due to the COVID 19 pandemic, this trend is increasing drastically. Tourism can provide a strong incentive to protect biodiversity, but the growing number of visitors is not a guarantee in itself that tourism revenues will be reinvested in protection and conservation. Concerns about the natural and cultural resources in protected areas are growing with the development of tourism. The subject of this paper is the sustainable development of tourism in protected areas, i.e. in the Biokovo Nature Park, its importance and role and capability of the protected area of its establishment due to the introduction of new attractions such as Skywalk. Its exceptional beauty and preserved environment are an excellent prerequisite for the development of tourism, but also a great challenge and responsibility because any excessive exploitation can cause lasting consequences for the environment. Upgrade of the tourism supply in the Biokovo Nature Park and the growing number of visitors requires continuous monitoring of all segments of the tourist impact on the area, but also raising awareness and increasing the educational capacity of visitors.The aim of this paper is to investigate the perceived impact of the new tourist attraction Skywalk in the Biokovo Nature Park and how the Park management responds to the growing challenges and pressures of tourism in this protected area. The final section of this paper presents survey results conducted with the aim of reasearching tourists' opinion on the tourism supply and the presentation of educational content and programs whish are the part of a project "Novi Adrion - Promoting the sustainable use of the natural heritage of the Biokovo Nature Park".