They had four of these miniature trains running around the museum grounds, but only one had steam coming out of it. I waited a long time for this one to come back to where I had first caught sight of it ;-). It was quite interesting, though, because they had flashing signs where the tracks crossed public paths, and sometimes there was a mini-train pileup while they were waiting for another little train to move out of the way. As we didn't have any kids, we didn't take a ride, but it might have been fun!