
Name: Eye of the Sahara
Location: Adrar Plateau, Mauritania
Coordinates: 21.114714464479544, -11.394300583868517
Why it's incredible: The eye is so big you can see it from space.
The "Eye of the Sahara" — also known as the "Eye of Africa" or the Richat structure — is a giant rock dome, carved with concentric rings, that looks like a giant bullseye when seen from above. The eye is visible from space and has been known to astronauts and scientists since the earliest crewed missions in the 1950s, according to the European Space Agency (ESA).