Ok, I needed a lunchbreak photoshop challenge, so I took the image and messed with it a bit.
What I did...
1. I did about a 3.8 degree rotation counter-clockwise. (I think it's still a hair off... maybe curvature of lense)
2. Cropped aggressively. I struggled with this because I liked the sky very much, but having the horizon right down the middle AND the river right down the middle was really bothering me.
3. Selected the ground and did +30 brightness, +50 contrast (I think the ground is actualy a bit underexposed- not surprising given sky is likely pretty bright)
4. Inversed selection (to sky) and did -10 brightness, +60 contrast. (might be extreme but I think it looked cool)

5. Did a sharpening pass... 70% .7 pixels (would vary with resolution)
6. Converted it to sRGB profile for web color consistency.
End result...
I think I might have framed this in portrait as well and tried to see how they compared. I would definitely have taken it in RAW so I could mess a bit with the sky vs. ground exposure needs, which also implies consideration should be given to HDR (which I dislike doing, but how is that all that different from what I just did?)