This shot is beautifully framed with no wasted space. The foreground is well balanced and not completely black - I especially like the light reflecing off the bottom of the metalwork.
You've caught the sun at a great time creating not only lovely tones but also a well placed flare.
My only issue with the piece is that the background isn't straight though due to the angle you've taken it from, if you were to straighten it the metalwork would be tilted too far and it would take away from the overall impact of the shot. I think you've balance it well though.