Around 2,200 years ago, ancient China's first emperor, Qin Shi Huang, began connecting many small walls to build the now-famous Great Wall of China. It eventually became over 13,000 miles (20,000 ...

Related Topic Page | National Geographic. How were China's legions of terra-cotta warriors made? Experts have pieced it together.

The Babylonian Map of the World, originating from ancient Iraq around the sixth century B.C., is the oldest known map. Depicting a circular world with Babylon at its center and surrounded by water ...