Banja Luka is the second-largest city in Bosnia and Herzegovina, located in the northern part of the country. It serves as the administrative center of the Republika Srpska entity and is known for its rich history, cultural heritage, and beautiful natural surroundings, including the Vrbas River. The city features several notable landmarks, such as the Kastel Fortress and the Ferhadija Mosque. Banja Luka is also recognized for its vibrant parks and green spaces, making it a pleasant destination for both residents and visitors. The city hosts various cultural events and festivals throughout the year.