Now that I look again, I remember that it's especially the bridge. I took the bridge for a smallish footbridge at the moment I first saw the picture (and I still do, every time I look). I don't know if that's good, "good", or what, but I do enjoy the effect.
Yes, when prompted I can see it that way. The promenade, which is two-thirds of the picture, has a definite human scale; there is little transition and, what there is, is hard to read.