I know this is a little more than what you're asking for, but I have recently gotten a little carried away with my own map making.
To design a town, I went to inkwellideas.com and had it generate a random town for me, and it came up with this:
I took that and tossed it down as a 2D flat surface in GoogleSketchup. I then copy-and-pasted a bunch of different sized houses everywhere (I was able to quickly design different sized houses in about 20 min per house), laid out the paths/roads, deleted the original picture I was working from and put down a new square for the ground and filled it in with grass texture, and now I can produce accurate eagle eye maps of anywhere in the town, like this:
or even scenic stylized shots like this: