This work analyzes Foucault’s contribution to the development of geographic thinking through emphasis on its interpretation of space and elements of its epistemology. To understand this, it will start from two directions, from the geographer’s interest in Foucault’s geography, as well as his reference works for this discipline. These disciplinary issues are best marked by his notions of geoepistemology and spatial turn in social and humanities, which are important because two issues we will address in this work. First, it refers to more precise definitions of the boundaries of modern, for which there is a consensus among geographers and is related to the establishment of scientific geography (Humboldt and Ritter), but the end of this epoch is interpreted differently. Some geographers link this to: identifying three key principles for the construction of postmodernism, which are: style, epoch and method (Dear, 1988); an increased attack on history in modern thought (Soja, 1989); infuriatingly difficult to define (Cloke et al., 1991) or with the emergence of neoliberalism (Peet, 1998). Another issue concerns the possibility of applying post-structural methods to deconstruct major cultural and geographical changes in the Western Balkans at the end of the 20th century. This will be achieved through indications of genealogical analysis in the interpretation of contemporary historical-geographical and political-geographical issues in the example of Sarajevo (1992-1995).