A "must do" when is Colorado Springs is to take the Manitou Springs Pikes Peak Cog Railway to the top of Pikes Peak at an elevation of 14, 114. While on assignment in Denver years ago, I took the trail to the top and also drove the road. The weather was to be "iffy" but there appeared to be a clear window in the morning so we made reservations....which created a large dent in the pocket book. The drive to the top would have been nice, but the last three miles of the road were not open yet.
A little history on the railroad per the internet and railway publication: