We crawled all over that thing.
I’m not a structural engineer and don’t play one on the internet but I know enough about it that I was very concerned about the structural integrity of that building and the age of the mortar holding those rocks together.
It won’t be long and someone is going to get hurt.
It was built by the Bishops with the state of Colorado trying to take it from him. Family members were arrested but eventually won in court.
Likewise, I was all over it as well. Wife doesn't like heights very much, so she avoided all the high spaces. This photo was taken from the highest point that one can attain in that tallest tower.