Iron Carousel

Justus, it’s been an amusing journey, but I have one last build to park here. Your last build shows you have been training hard! In my estimation this has been a fair (merry go) round!

All heard the loud bell, on the Iron Carousel,
It tolled to announce the round was done
And let the challengers rest while the sun
Was still up for both had stayed
Up far too late for their builds to be made