SUMMARY The modernization of fortifications during the early modern period and their spatial development had a profound impact on the structure of the city and the everyday lives of its inhabitants. Using the example of the city of Wrocław/Breslau in Silesia (present-day Poland), we discuss the changes that occurred in the perception of fortifications between the Habsburg period, when the city authorities were responsible for their development, and the Prussian period, when the development of fortifications was a subject to central authority. Drawing on written, iconographic, and archaeological sources, we obtain a comprehensive picture of the process of city prestige-building through investments in fortifications. Additionally, we observe fortifications as a factor that negatively influences spatial development and diminishes the quality of life in the city. Preserved documents allow us to trace the losses incurred by residents and institutions due to the expansion of fortifications.