The Golden Gate Bridge has stretched over the Golden Gate strait since 1937. It is considered to be one of the most recognizable structures in the whole world. Even people who have not been there would recognize it right away.
Source: Pixabay
But did you know that there is a mystery lurking underneath the Golden Gate Bridge? The National Oceanic and Atmospheric Administration (NOAA) decides to put the rumors to rest with the help of their underwater robots. What they discovered will surprise you.