If you could have personally witnessed one event in history, what would you want to have seen?
I have no idea. Maybe it will be witnessing the Birth, death, or resurrection of Christ. or the baptism of John the Baptist. Maybe witnessing John's dreams (Revelation). I also would like to see the creation of the world. Or the day, my mother met my daddy, so I can see what the heck attracted him to her. Or the plagues of Egypt, the first passover, or the first thanksgiving.
