Where the Rift goes into the Geothermal areas is probably my favorite place in the game outside, though I do love the northern icey wastes as well.
There's nothing quite like coming up to a massive cliff where there are gentle hiking trails all the way down, while you are surrounded by waterfalls, and far below you are pines with geothermal vents. In the distance you can see the wonderful snowy landscape, and to your west, thick pine forests going into a mountain canyon

It's quite perfect. That's where I'd "build" a cabin in Skyrim.