Around the World !!: One of 7 Wonders of the world : The Chinese Great Wall

Hello guys, we thought all of you would already known The Chinese Great Wall. So, now we just gonna tell you about the explanation of this Great Wall. Yeah, it's on the list of 7 wonders of the world. Well, enjoy!
The Great Wall
The Great Wall of China is a series of fortifications made of stone, brick, tamped earth, wood, and other materials, generally built along an east-to-west line across the historical northern borders of China in part to protect the Chinese Empire or its prototypical states against intrusions by various nomadic groups or military incursions by various warlike peoples or forces. Several walls were being built as early as the 7th century BC; these, later joined together and made bigger, stronger, and unified are now collectively referred to as the Great Wall. Especially famous is the wall built between 220–206 BC by the first Emperor of China, Qin Shi Huang. Little of that wall remains. Since then, the Great Wall has on and off been rebuilt, maintained, and enhanced; the majority of the existing wall was reconstructed during the Ming Dynasty. The Great Wall, as we know it, is actually a series of several walls built at different times by different emperors. The categories below are non-exhaustive, and all refer to wall systems rather than single monolithic walls.

First Great wall - built by the Qin Dynasty 221-207 BC
Second Great Wall - built by the Han Dynasty 205-127 BC
Third Great Wall - built by the Jin Dynasty 1200 AD
Fourth Great Wall - built by the Ming Dynasty 1367-1644

The Heritage of The World
The Great Wall, one of the greatest wonders of the world, was listed as a World Heritage by UNESCO in 1987. Just like a gigantic dragon, the Great Wall winds up and down across deserts, grasslands, mountains and plateaus, stretching approximately 8,851.8 kilometers (5,500 miles) from east to west of China. With a history of more than 2000 years, some of the sections are now in ruins or have disappeared. However, it is still one of the most appealing attractions all around the world owing to its architectural grandeur and historical significance.

This is the map of the wall

Visibility From Space

The wall supposedly can be seen from space. In 2001, Neil Armstrong stated about the view from Apollo 11: "I do not believe that, at least with my eyes, there would be any man-made object that I could see. I have not yet found somebody who has told me they've seen the Wall of China from Earth orbit. ...I've asked various people, particularly Shuttle guys, that have been many orbits around China in the daytime, and the ones I've talked to didn't see it."

Sacrifice

In development time, the dinasty force many man in china to build the wall. They work non-stop, many of them died and buried beside the wall.

Here is some of the picture from there...