Loved it as a kid, and I think about sneaking up there every visit. But... I begrudgingly agree.... progress is inevitable. It will eventually come down, regardless of how many memories we have about it. Is it Safe, no. would it still be Fun, yes!
I almost do not want to go back up though. I would not want to tarnish the image in my head, of the air rifles, the star room, the spiral staircase tree, the door to the toy store( that is now non-existant). It is like revisiting your old elementary, or middle school. It seems well, older, smaller, not quite as cool as it was when you were they 15-20 yrs ago. I will continue to photograph it, and maybe if the opportunity ever did come up for a last trip up...who knows maybe I would compromise my memories for one last look.