In this master’s thesis the author discussed the problems of industrial degraded areas in Slovenia. The first task was to review various definitions of the degraded area, both foreign and Slovenian. The next step was to review and study Slovenian and European initiatives in degraded areas and investigate various criteria for determining degraded areas, which was followed by an overview of various measures and strategies. Several examples of good practice in the field of renovation of degraded industrial sites were examined, whereby the author tried to determine the renewal approach that was applied. In the empirical part of this thesis, issues in Zasavje statistical region, which is considered to be the most degraded region in Slovenia, were addressed. The region was examined in detail and industrial degraded areas in Zasavje region were determined by means of an online record-keeping application FDO (Functional degraded areas). The author has visited the examined areas, analysed them in detail, and conducted some semi-structured interviews with some landowners. The research has shown that the majority of the areas is owned by legal entities and that some areas are publicly owned. In the conclusion, the author suggested the measures that should be taken to reactivate degraded industrial sites.