The first era of large Squares formation with geometrical structure in Iran was the Safavid erai. The study of the evolution of the Squares of this period is of great importance since many of the changes in the content, culture, and economy of the Safavid period can be evaluated by the rate and structure of these architecture elements. The city's turning points, community centers, the central foundations of the past cities of Iran and many other countries have been formed in or around squares. There is not much information about their ancient examples in Iran, but based on the influence of the squares in post-Islamic cities in Iran, it can be seen that in all periods of time there was a valuable urban structure among Iranians. In this research, we will examine three remaining indicators of the Safavid era. At first glance, we will analyze the process of formation and change over time, and then, because all three samples were built in a historical period, in terms of the form of structure and the impact of their urban cultural, economic, and social processes. We will compare their social influences. Based on the contained result, the Green Square of Qazvin has a purely governmental structure with a weak cultural and economic aspect at its time; Ganjali Khan's Square has one of the most significant cultural structures in the group, and the role of the Naghsh Jahan Square is a comprehensive example among them, due to its social and architectural aspects.