I think it was called You are There or something like that. I watched that too. Recall him visiting Conrad Hilton on one show. I think he also interviewed Castro.
"You are There" was Walter Cronkite with an important event in history. He would interview actors enacting roles at battles, Declaration of Independence, etc.
Too bad we aren't allowed to watch these old programs. Some film deteriorated over time, but it's probably the cost of restoration to profit that's keeping these programs in the can.