Banja Luka (Serbian Cyrillic: Бања Лука, pronounced [bǎɲa lǔːka]) is the second largest city in Bosnia and Herzegovina after the capital Sarajevo and is the largest city of the Republika Srpska entity. Traditionally, it has been the center of the Bosanska Krajina region, located in the northwestern part of the country. It is home of the University of Banja Luka, as well as numerous state and entity institutions of Bosnia and Herzegovina. The city lies on the River Vrbas and is well known in the countries of the former Yugoslavia for being full of tree-lined avenues, boulevards, gardens, and parks.