As part of the Interreg – IPA CBC project FORTITUDE a specialist workshop on the subject of heritage and promotion was held in the fortress city of Karlovac in October under the direction of Dirk Röder and Rafael Deroo. Project partners are the Sibenik Cultural Fortress with The ideal fortress town of Karlovac (both HR), the Fortified town of Herceg Novi (BA) and the city of Banja Luka (BA). The two-day workshop dealt with issues relating to the management and sustainable use of fortresses, digitalisation and digital marketing for fortresses and the development of fortress tourism using the example of the fortress town of Karlovac and the Dubovac Castle.