The great wall or the great wall of China is 13,170.7 miles long and is located on the northern border of China. It was initally created to fend off invaders from the Eurasian steppes but, would later become a historical site and tourist attraction. The original "wall" was not one wall but rather several walls which was built in the 7th century BC. It was not fully conjoined until the Qin Shi Huang dynasty in the 3rd century BC.

The Great Wall:	The Chinese Flag: