Cultural and social phenomena in our society have deep roots in the past. In other words, at least in part, the social behavior of current societies has its roots in their past, institutionalized in the subconscious memory of the citizens for hundreds or thousands of years. The cognition of social behavior of past societies and their structures could lead to a deeper and better understanding of contemporary social behavior. One of the most important ways in reconstructing social behavior of people in the past is the study of architectural and urban spaces. In fact, the most important issue here is the continuity of some social behaviors over a long period of time with emphasis on Islamic principles. Considering Iranian cities with historical heritage, the historical texture of the city of Yazd is well preserved. The reconstruction of the social structure of Yazd (emphasizing social communication) according to the remaining spaces from the past, and its possible continuity in contemporary society will be discussed in this paper. It seems that compact neighborhood, and some public spaces such as neighborhood mosques – in shaping of which, climate and economy have also played a role besides Islamic law – could have increased social interaction among neighborhood residents. Increasing the level of social communication, can not only increase the cohesion and solidarity between the residents, but also lead to the creation of a kind of informal social control in the neighborhood. However, some other architectural spaces and the archaeological evidence left by them, indicate the emergence of a different type of social behavior among residents. Some principles of Islamic religion like privacy, executed in private spaces, led to a kind of private life´s spread, wholly hidden from the public eye, causing the pretention and dual character, which is still observable in the contemporary society.
