The Great Wall - one of the seven new wonders of the world and one of the longest structures created by mankind. Due to the richness of history and culture of the Great Wall was one of the most popular attractions in the world. We invite you to see the greatest buildings in the history of our civilization.
The Great Wall was built about two thousand years ago in order to protect agricultural land from enemy intruders and prevent movement of the local population beyond the borders of the empire.
The Great Wall was built of stone, wood, turf and earth.
The beginning of its construction began in the 7th century BC, when the first local government built for the sole purpose of its own military defense.
Various walls were guard towers for signaling. At that time, as the signals in the day and night time use of fire or smoke. This allowed us to establish a secure connection between the towers.
Gradually, as the growth and prosperity of the individual kingdoms, was added to the construction of more new sites. Later, during the reign of the Qin Dynasty (Qin, 221-206 BC), which brings together China , the wall has turned into a whole.
The length of the wall is 851 8000 km and 800 meters.
When laying the stone block wall was used glutinous rice porridge with a mixture of slaked lime
Annually held the popular athletics marathon "Great Wall", in which part of the distance athletes running along the crest of the Wall.
Contrary to prevailing opinion, the Great Wall is not visible to the naked eye from space station, although the satellite images it shows.