The Great Wall of China photos

The Great Wall of China is the longest wall in the world built over 2,000 years ago, by Qin Shi Huangdi, the first emperor of China during the Qin (Ch'in) Dynasty (221 B.C - 206 B.C.) mainly to protect the Chinese Empire from northern invaders. Its winding path over rugged country and steep mountains of northern China takes in some great scenery. It is constructed of masonry, rocks and packed-earth. It was over 5,000 km (=10,000 Li) long. Its thickness ranged from about 4.5 to 9 meters (15 to 30 feet) and was up to 7.5 meters (25 feet) tall. The Great Wall is the building project with the longest duration and greatest cost in human lives, blood, sweat and tears. It deserves its place among "the New Seven Wonders of the World".