has increased every year since its founding in 2008. Rafting Rafting is one of the most popular form of outdoor recreation in Bosnia and Herzegovina, and is important part of the national park offer for the river Una. Fly fishing and angling The river Una as well as the Unac are popular fly fishing grounds, and among the largest in Europe. An abundant ichthyofauna, rich in salmonid species, primarily grayling and brown trout, with the Una being also famous huchen destinations. Fly fishing and other angling methods are allowed only in certain sections and under strict rules and regulations of the national park services. This also applies on most tributaries, especially the Unac, Krušnica, and Klokot, while the Krka, like most of the Unac watercourse within the National Park, is completely excluded from all water and underwater activities. Flora and fauna Over 170 types of medicinal herbs grow by the Una River; a rare plant called Campanula unensis, the "Una bluebell", was named after the River Una's bright turquoise and green colors. Ichthyofauna Twenty eight (28) species of fish live in the Una river, the biggest of which is the huchen (mladica, Latin: Hucho hucho). The river is rich in salmonid fish species, where as the healthy population of endemic huchen, otherwise globally endangered, makes the river Una and its main tributary the Sana, one of Europe's primer habitats and spawning grounds. Other smaller tributaries are also important for this fish, as it enters smaller stream during spawning season to lay eggs. Cities and towns Bihać Bihać is the largest and most important city located on the banks of the Una river and is the administrative center of the Una-Sana Canton in the Federation of Bosnia and Herzegovina and is the center of the Bihać municipality itself. The city itself has a population of 39 690, and the municipality has a population of 56 261. The Una National Park is almost completely located in the Bihać municipality, along with some of the largest waterfalls, canyons, cascades and tourist attractions. Some of the settlements on the Una river in the Bihać municipality are Martin Brod, Kulen Vakuf, Lohovo, Ripač, Pritoka, Golubić and Ostrožac na Uni. The river enters the city from the south after having formed the large Ribićka otoka island. It continues to flow north towards the Alija Izetbegović bridge and passes by the Midžića jezero lake. The first cascade