Thanks for the comments. I knew that I could have done better going in. This was basically a snap shot, and suffered from camera shake. I liked the picture I took from the top of the stairs better. This was taken the morning the challenge was announced, and I didn't have a chance to go back and do it justice.
My haste to finally enter a contest outweighed my dissatisfaction with the focus. Thanks DPC for making my first contest fun.
Interesting subject but not executed very well... It's too blurry near the roof and upper part of the staircase and I think it would've been nice to see the full circular shape of the stairs rather than cutting it off on the left and bottom.