the great wall - the great is the longest wall in the world.the great wall stretches from shanhaiguan in the east to lop nur in the west.the most comprehensive archaeological surey,using advanced techenologies, has recently concluded that the entire great wall, with all of its branches, stretches for 8,851.8km. this is made up of 6,25906km of sections of actual wall,359.7 km of trenches and 2,232.5km of natural defensive barriers such as hills and rivers