New Seven Wonders-Great Wall of China

The New 7 Wonders of the World have been announced during the Official Declaration ceremony in Lisbon, Portugal on Saturday, July 7, 2007.

The history of Great wall of China goes back to the 5th century BC. It was built between the 5th century BC and the 16th century to protect the northern borders of the Chinese Empire.

How long is the Great Wall of China?
The great Wall is the worlds longest building structure approximately 6,400 km (4,000 miles)long.
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