Curonian Spit National Park located  on a narrow strip of land between the salty Baltic Sea and the freshwater Curonian bay. The northern borders of the park pass along the Russian-Lithuanian border. The natural uniqueness of the territory of the national park is that it is the largest sand mound in the world. The dune landscapes of the spit are distinguished by their exceptional beauty and aesthetic impact on humans and are a unique object for the development of ecological tourism. The Curonian Spit is a unique example of the harmonious coexistence of nature and man, distinguished by an abundance of natural and cultural values. It is a cultural landscape formed as a result of the interaction of the sea, wind and human activities and it continues to form.