I'm already working on something like this for a "community game" called The Museum. (Link below) My nom de plume in the Dwarf Fortress forums is "Timeless Bob". Anyway, that game's world-map has many interesting areas and towns, which will all eventually make it into the ongoing Gazeteer I'm creating as a "Museum Curator". If you'd like to submit your images as well, I'm sure the game's host would be delighted.
The Museum: Adventure item quest (adventure succession game)