Man-made structures visible from earth orbit without mechanical aids (such as a camera or binoculars) include highways, dams, and cities. The most commonly cited example, the Great Wall of China is not the easiest one to see.
| Identifier (URI) | Rank |
|---|---|
| dbkwik:resource/gsDkWUIoDrRBwItMBMs9JQ== | 5.88129e-14 |