A friend of mine and I (around 3rd grade) were looking at a globe and pointing out various places like the United States, the oceans, etc. She then told me that the thick line running around the middle of the globe was the railroad track. It floated over the oceans and allowed people to get to wherever they needed to go!
A childhood belief about trains

others believed things like this
- I used to believe that the sky is blue because it reflects the oceans.— sky-is-blue
- At the time I thought the moon was made of cheese and with oceans of cheese— 123
- When my dad was young,he used to believe that the lines on a globe were on the world itself.— LINE MACHINES!
- I used to think that we lived in a gigantic snow globe.Anon
- The very first time I saw a globe (of Earth, yes) I asked where "College" was located.— Shade
- I used to believe that America was one of the states of the United States.— Limor