We analyze the built environment and its impacts on senior citizens' mental wellbeing. Through "Go-Along" method, 50 walking interviews were made to analyze the emotional experiences of elderly individuals in relation to the built environment. Results indicate that a highly walkable environment with local shops can generate a greater connection with the community, increasing individual tranquility and trust in public space. Natural elements like well-maintained gardens, consistent trees on sidewalks, varied tree leaf colors, and lush grass on streets positively influence seniors' mental wellbeing. These findings are crucial for urban design, offering valuable guidance to create inclusive environments that support healthy aging.