These shots are great
#1. The colors are the first thing that jump out and me and lead me into the buildings which I can see are very sharp. You put the horizon line in the center when it should really be in the upper or lower 3rd of the image, but I dont think that matters here, very well done.
#2. I love the contrast in this one. How the Washington Monument stands out like a glowing beacon among the dark trees and the night sky, beautiful!
#3 I really like this one as well, I love the clarity of the architecture on the church and the saturation in the grass. The solar flare was very well controlled here.
Out of curiosity, what camera/lens were these shot with?