Natural resources represent an integral part of human environment as well as wealth of a national territory. Those are geomorphological features, climate, water, biodiversity and protected natural areas that possess recreational, aestetic and ecological properties, which make them attractive for tourists. In order to transform those attractive properties of natural resources into market value, they need to be valued in tourism, but with emphasis on establishing balance between economic, ecological and social imacts. In the process of tourism valorization, special attention is given to protection of natural resources and growth of tourism forms ( sustainable tourism, ecotourism) which are responsibly approaching development. In Split-Dalmatia County, natural resources make the primary tourist offer. Tourism is still based on the traditional „sun and sea“ form. But, the Split-Dalmatian County is an area of distinct natural and environmental diversity that provides the opportunity to develop various forms of sustainable tourism. For example, the protected natural area of the Biokovo Natural Park is a worthy location with natural resources exploited for tourism purposes. Various recreational activities and educational opportunities are provided in the Park through educational paths and interpretation boards. However, tourist are not satisfied with the offer of accommodation and gastronomy. Therefore, there are still unused resources which can be valued in tourism through adequate planning and managing.