niceworldtour.com

One of the seven wonders of the world, the Great Wall of China is a man-made structures built over two thousand years ago and took about 100 years to complete. The extent of this project brings to light great human ability.

Construction began in the 5th century BC This was actually a lot of wall to collect and stretches more than 4,000 miles and was built to protect the Chinese Empire from Xiongnu people in the north. The wall was originally built of stone, grass, soil and wood, but brick is used once production begins. It is believed that about 2-3 million Chinese died as part of this project.