Banja Luka (Serbian Cyrillic: Бања Лука, pronounced [bǎɲa lǔːka]), or Banjaluka (Serbian Cyrillic: Бањалука), is the largest city and the de facto capital of the Republika Srpska entity and the second largest city in Bosnia and Herzegovina after the capital Sarajevo. Traditionally, it has been the centre of the 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. According to the 2013 census, Banja Luka has 199,191 inhabitants.