Last week’s seven Bing backgrounds in hi-res 1920×1200 resolution so they would be suitable as wallpapers for any screen size. From the seven above the one with Mount Vesuvius and the last one from the Zion National Park in Utah.
However for the more inspired in an architectural sense of the word the ceiling of the Familia Sagrada Cathedral in Barcelona is a magnificent wallpaper. And for the bird watchers you have a wallpaper with a great big bird, the Australian pelican.