Great Chinese Wall was built to protect the Chinese territory from Mongolian riders. Today the wall is 6 700 km long in a wild and hard-to-access terrain terrain of mountain ranges. The wall was completed after three centuries of hard work of prisoners and prisoners of war in the 17th century. Great Chinese Wall is based on older fortifications. The oldest ones comes from the 5th century BC from the time of reign of the emperor Chuang Čchin s'-ti-, the founder of Dynasty Qing. Also the following dynasties continued in constructing of the wall, which stretches in several lines and sometimes creates curves and junctions. The base of the wall is 7 to 8 meters wide at its foot, and the space between the double walls was used for weapons and food stores and various connecting corridors and the rest was filled with soil, stones or other materials. Great Chinese Wall’s height varies from 6 to 10 meters. The top of the wall was covered by tiles and each separate part of the wall was strengthened by a watchtower. Today some of the parts Great Chinese Wall are ramshackle and shabby, as the material is old and some was used for other purposes. Still, there are long continues parts of Great Chinese Wall that are a great tourist attraction.