Autumn is one of four seasons which comes every year in almost all countries (at least in Asia). In USA, Autumn is also known as Fall. Leaves of trees turn yellow, brown or red and finally trees leave their leaves. In Pakistan and India, Autumn season starts on approximately 15 September and ends of 14 February but dates are not fixed and may vary according to atmospheric conditions. Its time to have a look at 21 beautiful pictures of autumn season, when yellow leaves add beauty of roads and let trees to have new leaves. You can also download them as wallpaper.