This photo is an excellent example of symmetry... The centered and square composition highlights they symmetrical aspects very well. I can tell that there is a lot of detail available in this image, but at this size, I feel like I'm missing out on that for sure. A nice 640x640 pixel display of this dome would definitely bring some of that detail to the foreground.
I'm guessing that this is a handheld shot from looking at your camera settings, but I'm not sure. I imagine that a tripod shot of this scene with a slightly longer exposure would bring out even more detail and it would also brighten up the hightlights as well.
Nice "up" shot. I'd be interested to see more of the corners of the image. You might consider reframing/cropping with more of a true square crop. Nice job.
Well done. Hard to get the compositions on circle images done well. I like the frame created by the columns and the lighting and other details in the center are vivid.