Urban planning has received tremendous public attention in the last few years. Energy cost, environmental issues, traffic congestion and the feeling of lack of belonging in the cities are among the factors that have contributed to the development of pedestrian areas. These public spaces provide opportunities for shopping, entertainment, eating facilities and gatherings where people can experience urban life as pedestrians. Over decades, the concept of pedestrianisation has become part of social urban life in the developed countries. However, developing countries such as Iran have just recently paid attention to pedestrianisation and walking as a mode of transportation. The historic core of Tehran, the capital of Iran, embraces significant tangible and intangible values. For a long time, enhancing the mobility in the area has been the important concern of the urban developers; pedestrianisation is their recently solution to this issue in this site. To study and evaluate this project, a literature and field research have been performed through investigating the valid documentations and using questionnaires and interviews with the locals and visitors. Taking advantage of the Historic Urban Landscape approach, the results of the field and bibliographic research have been evaluated and recommendations have been made for improving the pedestrian-oriented areas in the historic context. The findings of this research show that converting a street to a pedestrian zone does not mean to simply ban the vehicles from entering the site. On the contrary, there are essential bases in the site such as multifunctional places, human-scale dimensions or activities during the whole day and night that should be taken into consideration to provide a suitable space for pedestrians including citizens and tourists. Pedestrian zones include different functions such as residential, social, cultural, tourists, physical, economic, etc. on various dimensions and scales which affect the whole city design and management. Moreover, these spaces should be supported by variety of facilities like parking lots, public transportation and equipment for people with disabilities. Assessing the impacts of pedestrianisation in Tehran Grand Bazaar can pave the way for future studies with the aim of conserving unique features of the historic sites within an urban development process.