The problems of the environment and pollution suddenly started shortly after the development of industry and technology. From minor local pollution, these problems have, over time, grown into a threat on a global scale. Sustainable tourism development, with the general concept of sustainability, places particular emphasis on the sustainability of tourism, which is becoming a significant problem in the Republic of Croatia. Throughout this work, the very roots and the concept of sustainable development will be explained and how it influences, that is, does not affect tourism. In a country of such great importance as tourism activities, irresponsible and reckless management of resources cannot be allowed. The first part of the paper deals with the basic terminology and history of sustainable development and tourism. In the second part of the paper, sustainability and tourism are combined into one whole, it examines how the concept works in the Republic of Croatia. The steps taken by the state and the population to raise standards and take the initiative for change are explored. In the last part of the paper, a survey was conducted to find out how much the population knows about sustainable development, what their personal view is and how much they are actually interested in learning more. Within the framework of motivation and good practice, there are positive examples of sustainable tourism whose rates should be followed outside the tourism, that is, the coast. Croatia is a country that can offer a preserved natural environment, however, with all the positive examples of good practice on this issue, it is still under-taken to protect the natural and cultural heritage. The work strongly advocates stricter laws and penalties, information workshops, all attempts to promote and promote green tourism in the hope of preserving existing ones and protecting them for future generations.