If We Built It Today S1E6: Secrets at the Great Wall
- Aired: 2019-08-18
- Time: 22:00:00
- Runtime: 60 minutes
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Overview
The Great Wall of China is one of the world's greatest engineering marvels, and it took dangerous, cutting-edge construction to build it. Experts use the latest tech and modern-day science to reveal if building it a second time would be as deadly.