The Great Wall of China is not especially visible from space.'
Though urban legend often asserts that the Great Wall of China is the only man-made object visible from space, the Wall itself is difficult to discern in low-earth orbit. Some parts of the structure are arguably visible, but its texture and color are too similar to the terrain to be markedly obvious. NASA's chief scientist for Earth observation, Kamlesh Lulla, suggested that cities at night are the most noticeable man-made structures (also visible: roads, bridges, reservoirs, and the Giza pyramids).