The theme of this article analyzes specialties, importance, significance and characteristics of achieving long-term sustainable tourism in the protected area of the National Park Plitvice Lakes. Starting from the structure and the proclamation of the park, this work describes the factors and characteristics that allow the growth and development of tourism in the area. The work is divided into four parts. The introductory part of the work allows understanding of topics and issues processing operation. In the first part, in general, are set forth guidelines relating to the concept of sustainability, sustainable development and its characteristics. The second part systematically analyzes the concept and characteristics of protected areas and their distribution, classification, significance and importance. The third part of the conceptual work is focused on the current situation of tourism and tourist offer in Plitvice Lakes National Park and all the possibilities that can be achieved with quality management in order to achieve sustainable development in the long run. In the last part of the work are author’s attitudes as the conclusion of all that is described in the work.