If I ever get super stupid money rich, I'm gonna buy a decommissioned lighthouse and put it on top of a decommissioned missile silo.
achievable today!
And then you just tell (or hint) to people that you're rich/eccentric.
Same result?
Maybe it's just the fun of the thought of placing two similarly shaped cylindrical structures, who both have outlived their utility, one atop the other. An artistic expression.
Another similarity that both structures share is their typical placement is somewhere remote.