There is the list of top 10 wonders of the world which are the masterpiece of the skill and handwork of the people of that era.
The Great Wall of China
The Great Wall of China was constructed 7th century BC. It is a series of a fortification built to protect the Chinese states and empires against the raids and invasions of the various nomadic groups of the Eurasian Steppe.
Another name for Petra is the Rose City due to the color of the stone out of which it is carved.
