The Great Wall of China is one of the ultimate wonders of the world. It was registered as a World Heritage by UNESCO in 1987. It stretches around 8,851.8 kilometers (5,500 miles) from east to west of China. The Great Wall is one of the biggest building construction projects ever completed. With a history of more than 2000 years, some of the segments are now in remainders or have disappeared. Though, it is still one of the most attractive attractions all around the world owing to its architectural grandeur and historical importance.