What is the most unforgettable moment of your life?

In my case its definitely that moment when I was in 11th grade and we went to Goa for trip during Dussehra vacations and while returning to our hotel that evening of 8th October 2016 I saw a very very tall white European guy. I was 5'7-5'8 range and he definitely looked a whole foot taller than me or maybe even more and I was under his shoulder level. He was the tallest person I have ever seen and also that was the first time I felt so small next to a person since my growth spurt which I got in 2014.