Primary healthcare offers a treasure trove of benefits, yet regrettably, some groups encounter more challenges in accessing it. Compounding this issue is the alarming decline amongst U.S. adults in having a primary care physician. Medical trust, a significant factor shaping individuals' healthcare-seeking behaviors and posing a notable barrier for women's primary healthcare, takes center stage in this presentation. Against the backdrop of healthcare disparities, especially among African Americans and Hispanics compared to non-Hispanic White Americans, this presentation delves into the transformative potential of the built environment in fostering this crucial trust. More specifically, the presentation summarizes the findings of two large-scale studies investigating the intricate relationship between the physical environment of medical waiting rooms and the establishment of medical trust. The interviews and surveys from over 1,500 participants revealed that some spatial characteristics and amenities, such as welcoming and calming environments, positively influence medical trust. Moreover, clear signage, well-maintained environments, and the inclusion of provider images and credentials were universally valued. Still, statistically significantly different preferences also emerged, with African Americans prioritizing seating options, images of physicians and staff, positive distractions, and the presence of similar patients at higher levels. These insights offer valuable guidance for healthcare stakeholders seeking to enhance waiting room environments, thereby positively influencing medical trust and ultimately improving women's healthcare outcomes.