Most beautiful season in Beijing – autumn. Autumn is a rich season for natural colors, especially fiery red and orange leaves. As the only virgin forest in Beijing, Laba Ditch Virgin Forest Park is the largest birch forest in the region and it’s also a place where the trees turn red early. It is the ideal time to appreciate red leaves there, as acres of trees turn a blazing red hue. The hilly surroundings become a fairytale world filled with red, golden, and green leaves.