When I moved to Topeka in 1974 I was already an adult, though arguably not a grown-up. I discovered this little train in Gage Park and very much wanted to ride it, but I felt silly getting on it with all the children and their grownups.
So after a friend had a baby and he grew up enough to ride the train, I used to "borrow" him and we'd go to the park and both happily ride. I liked the scenery going by; he was more taken with the train whistle and the engineer.
The train was refurbished sometime in the last few years, and it's looking pretty spiffy now!