Banja Luka is a city located in Bosnia and Herzegovina and is the second largest city in the country. It is known for its rich history, cultural heritage, and natural beauty. The city features a mix of Ottoman, Austro-Hungarian, and modern architecture. Some of the must-visit attractions in Banja Luka include the Banja Luka National Museum, the Petar Kocic Park, the city's Cathedral, and the impressive Banja Luka City Hall. Additionally, visitors can also enjoy outdoor activities such as hiking and rafting in the nearby hills and rivers. Banja Luka also offers a vibrant dining and nightlife scene, with a range of local and international cuisine options, as well as bars and clubs.