Any critiques are welcome.
Did you use the camera's monocolor mode, just de-saturate a color photo, or convert a color photo using an image editor? It's somewhat underexposed and a bit short on contrast, particularly the mid-tones which add a sense of depth.
The sky makes up almost exactly 1/2 the photo almost making it seem to be 2 photos squished together. One of the visual composition guidelines, the rules of thirds, would suggest the photo could be made stronger if it had only 1/3 sky and 2/3 landscape. (Because of the border I didn't crop my edit.)
The diagonal line the dam makes adds a nice sense of movement and acts as a leading line drawing the viewers eye into the photo. You've included enough frame on the left to give the water somewhere to flow to, completing that chapter of the story.
I used Photoshop, increased the exposure 3/4 of a stop, straightened the photo, adjusted the mid-tone contrast a couple of ways, sharpened it lightly, and did some dodge and burn here and there. I left the border so you could see how much out of level the camera was (0.9º CW):
Good composition. The walkway is a leading line, the building is framed in the scene in rough 1/3rds. The problems are the buildings roof being the same color as the sky and some distracting elements on the right side of the photo.
A slight crop top and right, and a vignette help somewhat to separate the building's roof from the sky.
Centering a main subject works best with a square or nearly square frame. Othewise, an image feels less dynamic.
Tough photo. I didn't like any of the edits I tried, though I did like a square crop that lost the light, with the door offset somewhat to the upper right. I also got rid of the electrical conduit on the wall.