给定一篇文章，将其翻译成英文。
中文文章：《中国长城》
中国长城，全长8851.8公里，是中国古代的军事防御工程，是中国境内保存最为完整的古建筑之一，也是世界上最著名的古迹之一。
English translation: "The Great Wall of China"
The Great Wall of China, with a total length of 8,851.8 kilometers, is an ancient military defense project in China. It is one of the best-preserved ancient buildings in China and one of the most famous historical sites in the world.