Koyo, or Japanese maple, refers to the beautiful autumn foliage of certain trees, particularly the Acer palmatum species. During fall, the leaves transform into vibrant shades of red, orange, and yellow, attracting many visitors to gardens and parks in Japan and beyond. This natural phenomenon is celebrated in Japanese culture, often associated with tranquility and reflection. The term "koyo" can also refer to the practice of viewing these colorful leaves, known as momijigari. People often gather in scenic locations to appreciate the beauty of nature during this season. Koyo is an important aspect of Japanese heritage, symbolizing the changing seasons and the passage of time.