Great Wall of China - Beijing, China - The Most Important Buildings in the World
The Great Wall of China is a historic defensive structure stretching across northern China and is known as one of the longest man-made structures in the world. Construction began as early as the 7th century BC and was expanded over various dynasties. Spanning approximately 21,000 kilometers, the wall was built to protect the Chinese Empire from invasions from the north. Today, the Great Wall of China is listed as a UNESCO World Heritage Site.
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