HD Wallpaper: Iguazu Falls
Probably the best free photo that can be seen online with the Iguazu Falls. Luis Poletti is the photographer and from his courtesy the image with Iguazu Falls is shared under CC0 license and here optimized for use in desktop backgrounds, homescreen phones, blog articles, graphic & web design, social media campaigns...
Widescreen Desktop / Macbook: 2560x1600 (fits on: 1920x1200, 1440x900, 1280x800)
Samsung Galaxy Tab & iPad: 2048x1536 (compatible with many tablets)
HTC, Samsung Galaxy & iPhone: 900x1600 (compatible with many phones)