Lets first look at what main things need to be done.
1. The original, except the sky, is badly under exposed. Likely from using Matrix/Evaluative metering.
2. Sharpen locally.
Note: I used ACR 7 (Camera Raw), not the ACR 8 LR 5 uses.
Since the sky exposure is essentially OK, local edits rather than global edits are needed so the sky highlights exposure isn't increased.
So the Adjustment Brush is the main tool of choice, because it allows us to do local edits. Unfortunately, the Adjustment Brush is still fairly imprescise compared to using Photoshop's selection tools for local edits.
I didn't record all the specifics, but I made 14 different 'new' edits using the adjustment brush. In other words there were 14 'pins' in the image
I added some blue color to parts of the sky and upped the exposure +.5 EV on some of the clouds.
I added +3 EV to the tree on the left, +2.5 EV to the front of the tower, +.1 EV to the camera left side of the tower, and +1 EV to the grass. The tower also got some Sharpening and Clarity.
I cropped so the near building corner camera left, and the near tower corner were both of RoT verticals. I cropped a sliver off the bottom so the low roof line was on the bottom RoT horizontal.
I left the keystone distortion and cheated a bit by adding a thin black border in Photoshop.