This thesis focuses on the development and application of a geographical model for sustainable tourism development in Varaždin County, with the aim of aligning tourism development with the principles of sustainability. It provides a detailed analysis of the concepts of sustainable development and tourism, as well as an overview of the region's geographical features, natural areas, and material and intangible cultural heritage. By analyzing current trends in tourism traffic, assessing the economic, socio-cultural, and environmental impacts of tourism, and considering the spatial organization of resources and tourism activities, a proposal for a geographical model of sustainable tourism development has been developed. This model includes ecological, economic, and socio-cultural aspects, with an emphasis on preserving natural resources, protecting cultural heritage, and spatial planning of tourism zones. The model offers concrete strategies for reducing tourism seasonality, encouraging the development of gastronomy and rural tourism, and increasing local community involvement. The goal is to enhance the competitiveness of Varaždin County as a tourist destination while ensuring the preservation of its natural and cultural heritage. The recommended measures and strategies enable tourism development that balances ecological demands, economic benefits, and the socio-cultural needs of the local community. This integrated approach aims to create a long-term sustainable tourism model that provides rich and authentic experiences for visitors while contributing to the sustainable development of the region.