FALSE

The claim that the Great Wall of China is the only man-made structure visible from space with the naked eye is a persistent myth that has been repeatedly debunked 3 6 10. According to NASA and astronaut testimony, the structure is not visible even from low-Earth orbit with the naked eye because it is very narrow and its color blends into the natural environment 2 4 5. High-credibility sources state that the human eye lacks the resolution to see the wall from such distances 1. Furthermore, the idea that it is visible from the moon is completely incorrect, as confirmed by multiple scientific and governmental organizations 2 3 7. Modern research identifies this belief as a 300-year-old guess that predates the space age 7 9.