This study investigates the relationship between urban green spaces and the mental health and well-being of city dwellers. Utilizing a mixed-methods approach, we surveyed and interviewed residents in various urban areas, examining their stress, anxiety, and overall mental health levels. Our results show a significant correlation between proximity to parks and green areas and reduced stress levels, as well as improved mood. Furthermore, qualitative findings reveal that regular engagement in activities within these spaces, such as walking, socializing, and exercising, is associated with higher quality of life satisfaction. These findings suggest that prioritizing the integration of green spaces in urban design can enhance mental health outcomes for residents. Future research is recommended to quantify the long-term psychological benefits of these environments. Our study highlights the importance of urban green spaces in promoting mental well-being and informs urban planning strategies to create healthier cities.