The Great Wall of China is one of the largest building projects ever carried out. It stretches about 1,500 miles from Bo Hai off the Yellow Sea in the East to the Gansu province in the West. It is so large it can be seen from space. A majority of the wall was built between 500-3000 years ago. It is believed to be the largest graveyard in history because bones of the workers that died during …showed first 75 words of 1236 total…

…showed last 75 words of 1236 total…top runs a 13-foot wide roadway. Behind the wall are intervals of permanent camps for troop guard stations" (Compton’s Encyclopedia Online v4.0, 2000). The effectiveness of the wall depended on the ability of the troops to move quickly to any point while under attack. Since the time the Great Wall has been extended, destroyed, and rebuilt, it still stands and has become one of major tourist attractions in the world. (AOL's Electric Library, Collier's Encyclopedia).