Lost valley redoubt is definitively one of my favorites. If you can ignore the forsworn all over the place it is a incredibly beautiful place. You have crumbling ruins, aqueducts, plenty of plants, not to mention a sort of terrace look to it. Also, I really like the marshes north of morath. They just appeal to me for some reason.
The entire game is gorgeous though, with the exception of the sewers. My tv makes the blacks very deep so it's hard to see even with maxed brightness. Using a torch is impractical because I play a sneak style :(
Other than that though it's all good.
I really like the area southeast of Isgramor and west of Riften at the big waterfalls. There are multiple levels of falls cascading down to the valley below. The change in elevation gave me a small sense of vertigo while standing at the top. And at each successive fall the landscape changes and the water flows beautifully and sounds like a real waterfall. If anyone has ever been to Adam's Falls in Colorado (or any waterfall for that matter), this area reminds me of a gigantic version of that. You can even hear the falls from a distance. I highly recommend stopping and listening to the falls for a minute...So Cool!
I’ve two places which contribute to my ‘happy space’. The first is an overhang ‘Greenspring Hollow’. It’s a lovely little overhang which I often goto. Whether it’s hunting or even hanging around with the pack.
The second is the Hall of Jorrvaskr which I often spend time on my step by the fire pit as I ponder my next move or adventure.