I'm working on three different regions: 2 real life bases, one is from a video game:
SAN ANDREAS: From "Grand Theft Auto: San Andreas", not making it as it appears on the game, it's all large cities, I like it for two reasons, first off I'm a huge fan of the game (I'm also gonna search for Liberty City and Vice City) and second it has mountains, river, lakes, hills, makes it look like real life, a little of everything.
I can't find any small maps.
PUGET SOUND: It's the entire Seattle and Bellevue area, it also has parts of Kitsap County, and parts of Shoreline and extends up to Snoqualmie Pass. I like the topography of it, it's just to dificult to recreate it from the real city, even though I live in Seattle. Similar to:
EVERETT: It has the entire city of Everett, WA, and also parts of northern Snohomish County, and also southern Skagit County. A bit similar to this map:

I'll add photos when I learn how to do that in SC4Devotion