This thesis deals with the topic of construction, destruction and the prolonged process of restoration of the Fortress in Slavonski Brod. The monumental defensive architecture of the Fortress, built from 1715 to the end of the 18th century, is one of the most representative symbols and part of the visual identity of the town of Slavonski Brod. Through the study of literature and archival documents, a fairly good and reliable picture of this monument’s turbulent past was obtained. Built to protect the Slavonian-Austrian population from Turkish attacks, the Brod Fortress never fulfilled its function because of various other circumstances which made it difficult to complete its construction. By the time it was completed and ready for use, the way of combat and warfare had changed. Also, after the termination of the Military Frontier, in 1860, interest in maintaining frontier defensive structures was lost. Nevertheless, the Fortress was used for military purposes during the 20th century, but enemy attacks in the Second World War as well as the Croatian War of Idependenc left a big mark on the buildings and the fortress complex in general. The restoration process that followed the devastation, which occurred during those unfortunate years, was very necessary and turned out to be quite crucial for the appearance of the Brod Fortress today. Although there are certain omissions, controversies and open questions about the ways in which this unique cultural monument should be resored, the fact that progress in the restoration of the entire area within the defensive walls can be seen gives hope that in the near future the Fortress will be restored to its former glory.