Tourism is an important branch when it comes to destinations and economic, socio- cultural factors. Sustainable tourism was created to make these three aspects successful and suitable for both service users and service providers. Sustainable tourism takes care of the destination in a way that provides a certain amount of income, but at the same time preserves the environment or the entire tourist destination. Certain sustainable tourism criteria, such as the GSTC criteria, help guide destination administrations towards the long-term or sustainable development of tourism and destinations. The diamond model is one of the models that facilitates tourist destinations in making and implementing decisions that result in the development of sustainable tourism. The importance of sustainable tourism can be seen in the example of Papuk Nature Park and other examples, while in examples like Venice and the Great Barrier Reef can be seen what happens when sustainable tourism is neglected. Paying attention to economic benefits without taking into account the importance of optimal use of resources and voting on the carrying capacity of certain destinations leads to situations in which Venice is currently, and then it is very difficult to find an adequate solution even in the criteria of sustainable tourism. It is very important to find a way to develop the destination in a sustainable way from the beginning, and not when the destination is already threatened because then it is much harder to achieve that the destination becomes sustainable and to preserve all its attractions, respectively the entire offer together with creating suitable conditions for the life of the local population without which the destination cannot give the same experience.