These League of Legends characters and environments weren't made by Riot Games, they were made by fans. But Riot thinks they're good enough for public acclaim, and so do I.
Riot and art site Polycount held a competition recently where users could submit their own designs for LoL stuff, and the winners - chosen by Riot - have now been announced. While they won't get their stuff in the game, they are getting their work shown off by Riot (and, well, us), and also won some swag for their troubles as well.
The full list of winners are here, but I've posted some of the highlights below.