This reminds me of a picture I took once, of two beautiful cars facing eachother in front of a symmetrical facade. When I showed it to a photographer, I immediately got the comment "too perfect". The critique stung, yet I understood exactly what he meant.
The same is the problem here. There is only the (slightly flawed) symmetry, but what else are we supposed to be looking at?
I wonder what it was that was so bad with the rest of the church facade that you had to squeeze the center arch so close to the image top.
I also have problems with the light here, it appears too flat to my tastes, and the flower beds almost seem two-dimensional - maybe there's something wrong with the contrast.
My suggestion here would be to find a different angle, or a different subject.
(John: Will this image also be deleted after a while, or will it stand to allow these critiques to have value?)