The thing I will credit Bethesda with is awesome world maps.
Yea, they're pretty good. I think...
I'm not sure if I want to give them more or less credit because of this, but I worked out that the entirety of Skyrim is only about 4x the size of my neighborhood (mind you I live in Houston, so it's a good sized neighborhood).
Skyrim is only ~15 square miles.
Makes sense, I guess, since you can ride across the whole thing in a like 10 minutes, or climb a mountain in a couple....but we don't really notice while playing. We think it's HUGE.
I wonder if that's a side effect of us maybe not living around mountains and being familiar with them...
Dunno 'bout where you live, but Houston is flat as hell.