Since their conceptual existence, prisons have been spaces used by the power to separate individuals who are considered to be disrupting the structure of society from the society. Concepts that have differentiated with the sociological and cultural structures of societies that have changed over time have also evolved their own spatial systems in accordance with their own changes. French researcher Michel Foucault's researches and theories on prisons have contributed to making them not just physical spaces, making their interactions with their environments visible, and making them a tool that provides a clearer understanding of their role in the transformation of cities and societies inherent in power. The concept of Heteratopia, which Foucault mentions in his work on the Other Space, is a concept that should be evaluated together with the imposition form based on principles developed with physical rules and the tools used by the power to produce itself, emerging in the network of relations, regarding understanding how spaces produce information after the 20th century. Intersections that meet this concept in cities also benefit an active role with some physical boundaries or administrative forms operated by the power. Buca Prison, which has been visible for years on the busiest street of the city with its sharp borders, has become a structure where such spatial relations diversify, dominate and become visible. Buca prison, which has seriously affected the built environment in which it is located, has defined new spatial boundaries arising from social relations for years. When these spatial boundaries are evaluated within the scope of Foucault's studies, new responses and information are produced. For all these reasons, this study analyzes how Buca was affected by Buca Prison, using archive scans and qualitative research method ve evaluated the spatial sections associated with the city with theoretical approaches from the perspective of Foucault.