I like the visual interest of the bridge, the lead in it provides to the folly, and the mound of brambles in the middle ground which breaks up the field. The folly is far enough away and the bridge of sufficient interest to keep the eye moving around the picture, which may be another way of saying I am not quite sure what the subject is!
Photgraphically, it is a shame the tree on the right has been so drasticaly pruned, but I don't have the knowledge or skill yet to attempt a substitution for it in the image.
But ultimately this is just a nice scene and the image was good enough for me to want to practice with LR and PS.
C&C is always welcome.