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This is another lovely example of your creative approach to photography. I love how the outermost arch carries the eye on a curving path through the frame.

I do find the lighter patch in the upper left corner to be distracting. I realize that you may not want to alter abstract captures such as this (by cloning, for example), but I feel the composition would be more abstract and impactful with pure negative space in that area.

I also feel there could be a bit more contrast within the details of the stairs and railing. The available lighting doesn't help, but some work with curves (or your preferred alternative method) could add punch and structure to the little angles and patterns. This is a matter of taste, of course. You may have your reasons for preferring a flatter image.

Thank you for this intriguing view of an architectural structure that many people probably take for granted.