Pliva is relatively small river in central parts of Bosnia and Herzegovina, however one of the most significant in terms of natural, cultural and historical heritage and value as a natural rarity. For hundreds of years this region was the ultimate stronghold of the Bosnian Kingdom, with town of Jajce as permanent seat of the last kings of Bosnian Kingdom. The entire region of Jajce is rich in natural heritage that cannot be viewed in isolation from the built heritage.