The San Francisco weather is famous for its extremes. This is a city where the famous fog rolls in thick and fast, and where the clear blue skies are second to none. This beautiful video of Golden Gate Bridge was made by photographer Simon Christen, who spent two years compiling footage for thistime-lapse video. His "love letter to the fog of the San Francisco Bay Area" was written during a series of pre-dawn hikes into the Marin headlands to capture the fog gliding over the hills and under the Golden Gate Bridge. The video is scored with dreamlike music by composer Jimmy LaValle.