I have a thing about spheres, idk why, it might just be a phase I'm going through learning Apo; the colosseum part started out as a sphere, but then I added some zcone, then I'm looking at it I and think "hmm, this looks like an arena," then I say to myself "it needs a sphere!" and then I realize it looks like a bliztball arena, but I'm okay with that.
Could be a phase but I have a similar issue with symmetrical fractals. It is funny though on how some fractals just look like things even when you had no intention of doing so, well at least at first. Ho-ray for the spheres!