Tehran, capital of Iran, is a dense city where many people are enclosed within built environments and they are unable to access the natural views even to the sky. Studies indicate that these consequences of densification have potential negative implications on people’s health, which designers and planners share responsibilities. Based on Iranian culture, traditional architecture, and behavioral science theories, present research aims to find a design policy for this problem. It assumes that having a Window View to the Sky (WVS) can be a restorative resource and compensate the poor living conditions in Tehran.Iranian culture is evidence that the sky has had a noticeable role in Iranians’ minds, believes, behaviors, and behavior settings. But in modern architecture this matter has been neglected and it seems that there is a great conflict between what people actually need and what behavior settings are offered to them. Moreover, recent architectural studies about windows and sky views are limited to the field of conservation concerning natural light.On the other hand, studies in environmental psychology imply that limitation of view within built elements is not preferable from habitants (Purcell et al, 2001) and can lead to sensory deprivation and so, to sever psychological anomalies (Parr, 1966; Bell et al, 2001).Increasing studies show that the psychophysiological problems of urban living arouse restoration needs (van den Berg et al, 2007: 92). Regarding to the modern life style which keeps people indoors, a restorative resource should be easily accessible during everyday life. Windows can satisfy this demand and provide a micro-restorative experience (Kaplan, 2001). Also, natural elements in views can increase the effectiveness of windows (Kaplan, 1983, 2001; Tennessen & Cimprich, 1995; Ulrich et al., 1991; Talbot & Kaplan, 1991). But, these studies are usually focused on greenery and there are limited studies about human relation to the sky. To find a solution for the research problem and to bridge aforesaid gaps in architecture and behavioral science, the research purposes to examine the importance of a WVS for people living in dense urban circumstances. Therefore, the research questions are: is a WVS significant for urban people; does a WVS have a restorative potential to affect human wellbeing; what are attributes of a beneficial WVS?Research methodology includes a deep interview with Iranian habitants to explore how they experience the sky. Interview results show that this relation is important for most of participants; dominant features for the sky are infinity, depth, color, and changing; and dominant effects of viewing the sky are calming and release. Also to find out the restorative potential of WVS, the research measures fascination and being away factors via PRS (Hartig et al) in a survey. This step of the research is ongoing, which will be followed by a study to find out properties and dimensions of a beneficial WVS.