This paper aims to investigate the revitalization of collective memory and its effects on the improvement of the lost place identity resulting from disasters such as war or natural disasters which undermine the common route of structural social evolution of a district unexpectedly.

An identity which is the outcome of internalization of a place identity for a person and its result is emotional attachments between person and his environment. Maurice Halbwachs, the most important theorist of collective memory, by emphasizing on the relationship between groups and places, believes that "when the members of a group stand in a space, group’s specifications are transferred to the space and simultaneously a kind of adaptation with resistant elements is made and a distinctive form is put on the structure of that space". Places incite the memory of those people who are situated in such places with the same histories and simultaneously remind the same past days of those people who are out of the places and want to know something about those places.

Therefore, memory which is location-oriented subject, when its bed formation i.e. its place skeleton is disappeared due to disasters such as earthquake or war or it faces main and important changes as a result of hasty reconstructions, it is distorted and the place characteristic may be lost forever. Therefore, Place memory relates to place and society which meets continuous identity as a result of relationship and interlink with place. An important point about retention of collective memory after natural disasters is that to the contrary of common conditions of revitalization of historical textures, both the place and the majority of society have been disappeared therefore, strategies for dealing with such places should be codified on the basis of careful selection of place identity or society, place and their interlocking relationship. By relying upon the role of place identity in the formation of memories as infrastructure of personal and collective identities in a society and mutual relationship of memories with the degree of emotional attachments of people with environment in these two types: place identity and place attachment, this article proceeds to describe these three strategies: retention and repair, readout and event programming in different shaping aspects of a place such as form, activity and imaginations. This article with review and quality analysis procedure on the basis of experimental strategies explains reasonable approaches in revitalization of collective memories in reconstruction projects after disasters.