Good, Free Images with No Licensing?

Hey everyone, I’m not really sure if this is the correct forum for this question, but since I am unsure of where else to put it and I am doing it for a game, I figured that this would work. I am looking for a site that has quality images for free, but that I don’t have to worry about licensing rights and things like that. Does anyone have a site (or 2) that they really like to use? Specifically, I am looking for some maps, of the United States and Europe, but really any site will do, because I want somewhere that I can go for modeling resources as well.

http://cgtextures.com/ is pretty good for textures.

since you do not really use referece images in your personal work, and the building or whatever depicted is not copyrighted, as far as i know you can use any reference images as far as it does not look exactly the same. (not 100% sure as i said)