The colors, the balance and the sea, all the peaceful elements in one image. Clearly the best of the two images posted and I will tell you why. The heads on approach of the other image gets in the way of balance, while this one with the tapering diagonal carries you into the distance. If it could have moved even more to the side to angle the posts more, it might make an even better statement. I would imagine this image would change with the weather, and might benefit with a darker sky or possible a twilight ceiling with stars.
There also is the unanswered question as to what happened to the rest of the posts? I would like to see more variations on this scenic.