The Great Wall of China is visible from space.

Stretching over 13,000 miles, the Great Wall of China is one of the most iconic world wonders. Contrary to the popular myth, it is not visible from space with the naked eye but can be seen in low Earth orbit under the right conditions. Built over centuries by various Chinese dynasties to protect against invasions, the wall is a remarkable feat of ancient engineering and a UNESCO World Heritage site. Its construction involved millions of laborers and remains a testament to human ingenuity and determination.