While some people claim other structures like the pyramids or the Amazon rainforest are visible, there is no scientific evidence to support this. The Great Wall's immense length and its construction with materials that contrast with the surrounding landscape make it the only human-made structure that can be seen from orbit.
However, it's important to note that even the Great Wall is difficult to spot from space, and it is often only visible under very specific conditions, like the right lighting and a clear atmosphere.
