I was 23 when I had this encounter.
I was at Paramount's Great America with my family & I was standing near a ride under construction. I saw a boy who looked to be about 10-years-old. He asked me to help him find his mom and dad as he was tired and wanted to go home. So, I said I'd help him.
I bent to pick-up a quarter and when I looked for the boy he was gone!
A few days ago, I was on the "Shadowlands: Ghosts & Hauntings" webpage and saw a segment on hauntings here in CA. One of them was Paramount's. It said a ghost of a 10-year-old boy haunted the area near a ride which had been torn down. The child, it said had been killed on the ride when he fell from the car he was riding in.