Protected natural areas of Kazakhstan, particularly national parks, occupy a unique role in developing ecological tourism. One way to ensure biodiversity conservation, environmental preservation, and regional sustainability is through promoting ecotourism in national parks. For the “Altynemel” National Park, ecotourism should be regarded as a priority type of tourism. The article considers the essential technologies and principles of implementation of ecological tourism in the National Park “Altynemel”. Identified and justified the uniqueness of this protected area—the equal value of natural and cultural heritage on its territory. We revealed the problems and constraints of ecotourism development in the national park and offered the ways of their solution. The article is written based on field research materials, methods of a local population survey, interviews, and focus group discussions. In this article, 201 representative families were interviewed using questions on a 5-point Likert scale, including 159 residents of the village of Basshi and 42 residents of the village of Nurym. The results show that the overall assessment of sustainability is mild in the two communities. As a result, we claim that sustainable development in the “Altynemel” National Park is far from perfect. Sustainable development in the “Altynemel” National Park could be better. In particular, tourism development’s positive economic and political impact has yet to be apparent.