Founded in July 1579 by archduke Karl von Habsburg, Karlovac lies at the confluence of the Korana and Kupa rivers. Although it’s famed for its beer, there’s lots more to discover here than Karlovačko’s brews. Karlovac has always been an important trading centre, with good links to not only Zagreb but Rijeka, Ljubljana and Sarajevo. Part of this past can be seen in the medieval Dubovac Castle, built in the 13th century, and the star-shaped old town, which used to form the heart of a fort. Karlovac’s Holy Trinity Church was built at around the same time. It’s been a Franciscan monastery since the 17th century and is still in use as a church today.