According to urban theory, commerce and public spaces are historically related to each other. Based on this premise, this paper analyzes a market, a shopping center and a mall. The goal of this research is to identify the key factors that turn these shopping precincts into public spaces and contribute to the public sphere in Santiago, Chile, at least within the context of the limitations associated with their private nature. To date, these three typologies have been the focus of intense debate. However, there are few studies of the public life that takes place in these spaces, especially when considering that they coexist simultaneously in the city, claiming a space within it. This research describes the physical-spatial and administrative characteristics of these three cases in order to contribute to the strengthening of public policies in urban design. Likewise, commerce is studied in relation to accessibility patterns at metropolitan level and the types of markets that aim to attract different users and promote the public nature of these spaces.