How much did the Chinese wall take to build?

The building of the Great Wall of China took about 2000 years to build to completion. It's construction began in the Zhou dynasty, (pre-warring period), and lasted until the Ming dynasty fell. In today's cost, it would total up to about $360 billion dollars. Estimates suggest that about 800,000 people contributed to the building of the wall while under Emperor Qin's rule.