Though the gate and fence (and light) are man made, the starkness of the red bush against the stained green gate really stands out to me. Plus the gate is made of of natural things (ha ha).
I also decided to use this same picture for a texture experiment. I cropped the picture and too away the action used above. Then I added Kim Klassen’s Granny’s Cupboard texture. From there I added Gorgeous Tones 5 as an overlay. I brushed away some of the texture from the gate itself. Sorry, I can’t remember where I found the Gorgeous Tones textures.