My project is a comparative study of space separators like Berlin wall in the case of the city of Berlin and the iron bars recently installed in downtown of Tehran city. As a flaneur I wander in the city of Berlin to trace the former resistance of citizens opposing the physical and conceptual existence of such separators and compare them to the contemporary endeavors which are being done by Tehrani citizens. I am addresing these questions: is it possible to pass the borders and walls without deconstruction? How do the walls and other separators define different urban subjects and sections?