It's more than 2,000 years old, but the Great Wall of China remains one of the great wonders of the world, an engineering feat rarely matched in the 22 centuries since its construction began. Stretching 4,500 miles, from the mountains of Korea to the Gobi Desert, it was first built to protect an ancient Chinese empire from marauding tribes from the north. But it evolved into something far greater - a boon to trade and prosperity and ultimately a symbol of Chinese ingenuity and will.

The Great Wall started as earth works thrown up for protection by different States. The individual s...Read More