Perhaps Banja Luka's most striking structure with its high walls and towers, though it could do with some renovation work. But passing through the archway you are greeted with a wonderfully serene view of the Vrbas, along whose grassy banks locals idle away and read in bliss.Built by the Romans and then fortified again by the Ottomans, the fortress often hosts outdoor concerts but it is as a peaceful retreat from the bustle outside that gives it its real charm.
