The grainy texture adds so much persona to this photograph. This could've easily been a "colorful sunset/bright blue sky" image, but the way you display this tells so much more. I can imagine a short-story telling the tale of this day.
what a great place and composition - I like the grain but oh, you got too much sharpening especially on the left side of the picture, building and tower.... I wish that you'll revisit the image and process it differently.