Historic urban areas are a significant part of each city not only due to having irreplaceable cultural and social resources, but also due to their attractive patterns of life. They have being threatened by strong development trends. This paper aims to investigate the impacts of redevelopment trends in the historic city of Shiraz, Iran. The paper begins by highlighting historical development in the different periods such as Atabakan, Safaviyeh, Zandiyeh, Qajar and Contemporary period; and then, it investigates types of heritage in Shiraz, and, the impacts of modernization trends on the historic urban area of the city. The purpose of the present study is to investigate some of the problems involved in the conservation of the historic settlements in Iran with particular emphasize to the historic settlement of Shiraz city. This study found that confrontation between strong development trends and urban heritage conservation led to loss of numerous tangible and intangible heritages in Shiraz.
