Oooo, LeeJ, I remember going on that as a really young girl. Another good one is riding the narrow gauge train over Red Mtn. Pass from Ouray to Silverton. Breathtaking. The cars only have canvas rollups on the windows, so you can literally hang your head out over an immeasurable drop from the top of the Rockies waaaayyy doooowwwnn into a deeply cut gorge.

Also, the curving steps up into the Capitol Dome in Denver were made out of angle iron with open risers. My sister ran up those with a broken arm! Open risers always used to scare me.