In today's lecture, we'll discuss the impact of urban green spaces on mental health. Recent studies have shown that access to parks and gardens can significantly reduce stress levels. However, the key factor isn't just the presence of green areas, but their accessibility and safety. For instance, a study in Melbourne found that residents living within 300 meters of a well-maintained park reported lower anxiety. Interestingly, the size of the park mattered less than the quality of its facilities, such as seating and lighting. So, city planners should prioritize improving existing spaces over creating new ones.