Karlovac is a city located in central Croatia, situated at the confluence of four rivers – Kupa, Korana, Mrežnica, and Dobra. With a population of approximately 55,000 inhabitants, it is the administrative and cultural center of Karlovac County. History The city was founded in the 16th century as a military fortress by the Habsburg Monarchy, who wanted to protect their borders from Ottoman invasions. Its location at the confluence of four rivers made it strategically important, and the fortress served as a defensive line against the Ottomans. The fortress was…