The greatest protective structure in the world

Great Wall of China is not surprising that the Great Wall of China is considered the eighth wonder of the world. Outstanding architectural achievements of human thought long 6700 km is the longest protective structures in the world, one of the greatest structures ever built on the planet. This is a great creation time the Chinese empire stretching from west to east across China, from Liaoning Province through Hebei Province, Tianjin Municipality of Beijing, Inner Mongolia Autonomous Region, Shanxi province, autonomous region of Ningxia, and up to the Gansu province. Wall form bends, crossing mountains, plateaus and deserts. The wall is not a continuous uniform design, parts of it were built at different times. The wall looks like a giant snake crawling along the ridges of mountains Construction started about a masterpiece in the VII century BC. er. during the reign of the Qing Dynasty, and was held under the control of the rulers of several dynasties. The wall was built to protect the State from incursions of nomads from the north. In addition, it in itself is an amazing creation of the Chinese masters. Its thickness in places ranging from 8 to 10 meters and a height of 15 meters. The wall is constructed so as to make room for moving horse carriages were used for construction materials such as stone, tile, wood and sand. The stone was mined in open pits, located in the mountains, through which the wall. The upper portion of the wall consisted of stone blocks, arranged in 3-4 rows, they were so well adjusted to each other that the joints between boards do not even evolved grass. The width of the wall was chosen so as to make room for both to pass six riders in a row, not to mention horse-drawn carriages. The entire length of structures were built huge military tower. In each of the towers could be 30 to 50 people, so the tower was constructed about 180 meters of steps, organized by the plumbing system. For the construction of the tower required a huge number of workers. In the VII century, in the first ten years of construction deaths of about 500 000 people. There are few areas of the Great Wall of China, were permitted excursions are only a few open to the public areas of the Great Wall of China. Closest to Beijing are Badaling and Tszyuyyunguan sites that are most frequented by tourists wall segments. Mutyanyuy also popular, but there is the density of tourists is much higher than the previous two. It even built a cable car to bring tourists to the wall. In section Huanhuachen quality ancient "building technology" significantly higher than in other places. This section of the wall is located 60 km from Beijing. It is called the Castle of yellow flower and rarely visited. At the beginning of XX century on the Great Wall of China began restoration work, and in 1987 it was declared a World Cultural Heritage. See also other materials of record objects and phenomena: Land Basin biggest edifice that was built on the planet living beings ... It flows from the rocks water ordinary record of a tsunami wave height Desert-record the largest lake in the world based on the volume and surface area of ??the Record At the height of the continents of Everest is the contender! The deepest point of the oceans cuho Here, as in the space where much warmer planet Fridge not very deep, but one of the longest caves Powerful tremors did not bring trouble, but the tsunami biggest river in the world as formed the largest seamounts Dead Sea - why is it so called? The place where the biggest annual rainfall Ice celestial bombardment Giants ice kingdom longest bridge in the world, places of extreme temperatures