Tianmen Mountain: Heaven Linking Avenue has 99 turns. It is famed as the number one road in the world. Covering a distance of 10.77 km, it zigzags its way from 200 meters to 1300 meters above sea level, flanked by precipitous cliffs and deep valleys. The posture of the mountain is like a soaring great dragon. It has 99 turns symbolizing the Heaven has nine palaces.