These are high resolution wallpapers of Windows 7 ( The next OS of Microsoft Windows Family). So if you are kind of person who loves wallpapers and pickup a new one which are free to download.
Abstract Design,Macro Photography & Nature
Windows 7 Himalayas Wallpaper
Windows 7 High Resolution Wallpaper
Windows 7 Wallpaper Pack (50+ High Quality Wallpapers)
Most of the images are of high Resolution: 1440×900 and size approximating to 1MB or more. In case you want more just check their wallpaper collection