Great Wall Of China

• Great Wall is a single, continuous wall built all at once is a myth. In reality, the wall is a discontinuous network of wall segments built by various dynasties to protect China’s northern boundary.
•  During its construction, the Great Wall was called “the longest cemetery on earth” because so many people died building it. Reportedly, it cost the lives of more than one million people.
•  The length of all Chinese defense walls built over the last 2,000 years is approximately 31,070 miles (50,000 km). Earth's circumference is 24,854 miles (40,000 km).
•  In 2004, there were over 41.8 million foreign visitors to the Great Wall of China.
•  The Great Wall of China is 25 feet high in some places and ranges from 15-30 feet wide