1) I've been on the Trans-Mongolian Express (Moscow to Beijing via Ulan Bator).
2) I've been shot at during the "May Events" aka "Black May" in Bangkok, 1992.
3) I've bumped in to two people from school, separately, on the same day in Sydney. I also bumped in to my sister and her boyfriend in the same place a few days earlier. Bearing in mind I come from Somerset and went to school in Bristol this was quite a big deal.
4) I used to work in old-fashioned mechanical, lever framed signal boxes. Unfortunately they were all dismantled. I am now working in a late 60s built panel signal box that is also being dismantled. I am gradually getting more modern working conditions but I doubt if I will be moving in to the newer computerised signal boxes.