Trees are made with l-system. m@dcow’s fabulous skymap in the background.
I am happy with the result. I know that the grass and road are bad but hey they could be a lot worse. 
I made those textures with the GIMP.
Feel free to comment.
That looks really good! I think the lighting is a little dark (unless it’s a cloudy day 
) But the trees are awesome, how did you do them? I mean, what is that I-system thing?
I got lcd screen … d’oh … so I tend to make pictures too dark.
About the trees: Check this page: http://www.geocities.com/blenderdungeon/lsystem/. All you need to do is to download the script and open the .blend file. Then learn by tweaking. 
There’s a lot of parameters to tweak but after a while of tweaking you will get hang of it.