Magna Carta being signed, or maybe Stonehenge being built. I had a lot of trouble not thinking of dire events as an answer. Curse my febrile brain. First thing I thought of . . ? Mt Vesuvius. What a ninny.
I would have liked to have been there to see man land on the moon 🌑 it would have been life changing to see the ingenuity of man that took us to the moon. It would have been wonderful to see Neil Armstrong walk on the moon. The advances in science at that time showed that we were really coming of age with our knowledge in this field. Apart from that, being there to witness the home coming parades at the end of WW2 would have been so joyful and full of hope. Seeing families once again reunited. It is great to see the end of any war where young men are sent so far from their families.
I would like to have been present at the 1963 civil rights march on Washington in which Martin Luther King delivered his now famous "I have a dream" speech. This speech embodies the concepts of freedom, equality and respect.
Would have liked to have been present when troops located and liberated Australian Prisoners of Japanese in WW2.
Would liked to have been present when Jesus threw the money lenders out of the Temple 2,000 years ago.