Firstly, the whole photograph is in focus, thats a great start. The colour is bright and eye catching and the purple creates a complimentary contrast with the silver /white.
It looks a bit like an optical illusion, I can't quite figure out the shape of what it was, It's deffinately a breathtaking capture!!
It's also original and it looks very proffessional. I'd deffinately hang this on my wall! I can't find any faults or improvements so I'd like to say that you've done a great job and (in my opinion) you have created a visual masterpeice with this structure as the subject!