Prior studies have shown that natural and physical environments have significant impacts on human health. However, few studies have been published examining impacts of natural and physical environments within healthcare facilities on patients’ health outcomes, both mental and physiological. This research explores the effects of the built environment for childbirth, specifically in terms of daylight exposure on women’s recovery from post-Cesarean Section. The researchers recruited a total of 296 women undergoing Cesarean Sections from three tertiary hospitals in Taiwan for this research. Results showed that increasing daylight exposure is significantly associated with larger improvement of pain’s interference with relations with others, enjoyment of life, and mood. Appropriate patient room design will save energy and expedite recovery.