Do you know?
Bliss is the name of a photograph of a landscape in Napa County, California, east of Sonoma Valley. It contains rolling green hills and a blue sky with stratocumulus and cirrus clouds. The image is used as the default computer wallpaper for the "Luna" theme in Windows XP.
The photograph was taken by the professional photographer Charles O'Rear, a resident of St. Helena in Napa County, for digital-design company HighTurn. O'Rear has also taken photographs of Napa Valley for the May 1979 National Geographic Magazine article Napa, Valley of the Vine.
O'Rear's photograph inspired Windows XP's US$ 200 million advertising campaign Yes you can.