Great use of space here. There really isn't too much to critique here, other than a slight washing out of the highlights, and the focus being a bit soft.
I find myself thrown by the almost-not-quite symmetry. This scene is a nice setup, and you've done well with the lighting apart from the highlights issue mentioned by those above me. I'd like to see the POV either directly in the center (If you note the bases of the statues, there is more "side" on the righthand one), or more towards the right, as if I were "relating" to the lefthand statue and gazing at the space across to the righthand one. I think either of those POVs would give a little more "story" to the image, by the direct exact balance of space between them, or by drawing a direct line to one side or the other to "support". If you have the opportunity to go back, I'd love to see the result. 8)
If you added the circle of shadow around them, well done, I like that, it draws the eyes away from the edges and towards the center, really highlighting that space between.
Not much to add to the above constructive critiques.
Do have some post processing considerations, time and opportunity permitting on your creative end that might address the mentions of highlights and that of soft focus:
An interesting idea. Personally I don't think there is quite enough going on to capture the viewers attention fully.
The only other thing I noticed is that the angle you have taken it from does not seem to be quite dead on (notice the line in the brickwork at the top of the screen does not line up perfectly with the border pf the image). Normally this would be nit picking, but because this is such a minimalist image I think it's more important for the angle to be perfect.
This is very much my sort of image. I would have gone for less sepia to give it a more technical feel and a less 'old' look, but that is just personal taste. Everything else has been said.