Thanks to everyone for the helpful replies!
I asked about the compositions for two reasons. In the case of the first photo, though I've always liked it because the large sphere dominates in such a way that it feels like it's about to devour the city, nobody I've ever shown it to particularly likes it or sees it that way. In the case of the second photo, I've always thought it was close to being right but not quite there without knowing why.
I think Jeff's crop is an improvement, though it tells a different story. For all of you who would like to have the impression that the ball is rolling toward the tunnel, I wonder if I would need a ladder for shooting from above to give that impression.
Lon, I think the ball is about 8 - 10 feet (2.5 - 3 meters) tall but it has been so long since I have seen it that I'm not sure.
Shane, to address your thinking, I made the quickie crop shown below that took less time than cloning the numbers on the building.
All: This little park with the ball and tunnel has some other very interesting aspects and your discussion invigorates me to revisit it and give everything another go. Thank you!