“…Their role is ambiguous, since they divide, communicate and belong to both public and private domains at the same time (Madanipour, 2003). Boundary walls are implicit in the discourses of urban security, fear and socio-spatial segregation (Graham and Marvin, 2001;Hirt, 2012;Low, 1997Low, , 2001Tulumello, 2015;Vanka, 2014). They are considered as an impediment to the publicness of public spaces (Flusty, 1997(Flusty, , 2001Langstraat and Van Melik, 2013;Nemeth and Schmidt, 2011;Varna, 2014).…”