All kind of pixel art images, avatars, and animated gifs.

You can select an icon (or upload it) and then fully customize it via this generator.

Fantasy and space travel posters.

"The goal of this project is to offer a consolidated library of icons used in various libraries, window makers, themes and other applications. Over 10,000 unique icons in svg, png, xpm, ico, and icns formats. See homepage for details."

"The National Collection of Aerial Photography is one of the largest collections of aerial imagery in the world, containing tens of millions of images featuring historic events and places around the world."

Pics from Walker in South Africa in 2008