Banja Luka (Serbian Cyrillic: Бања Лука, pronounced [bǎɲa lǔːka] ) or Banjaluka (Serbian Cyrillic: Бањалука, pronounced [baɲalǔːka]) is the second largest city in Bosnia and Herzegovina and the largest city in Republika Srpska. Banja Luka is the traditional centre of the densely-forested Bosanska Krajina region of northwestern Bosnia. According to the 2013 census, the city proper has a population of 138,963, while its administrative area comprises a total of 185,042 inhabitants.
https://en.wikipedia.org/wiki/Banja_Luka