NatGeo Wallpapers

If you are looking for a great wallpaper take a look at NatGeo’s wallpaper site.   National Geographic is famous for beautiful photography and they have a huge wallpaper section where you can download beautiful wallpapers for free. Wallpapers are categorized under 10 categories (Adventure & Exploration,  Nature & Weather, Underwater,  History, Landscapes, etc). Unfortunately, the bad thing is that images are available only a maximum of 1280 pixels wide.

Homepage: http://photography.nationalgeographic.com/photography/wallpapers