Travel coincidences

Almost all my coincidences are around travel: In 1988 I went to Berlin and bumped into a departmental field trip from my university, including many people that I knew. In 1990 I crossed paths with a woman while I was travelling in Finland. I had met her four years earlier when I spent some time on the kibbutz near Jerusalem, where she had previously lived for 20 years. In 2005 I was stuck at the ferry port in Turkmenbashi and chatted briefly to a Japanese girl there. Two months later I found her in a youth hostel in Warsaw. In 2006 I travelled for some time, from Ushuaia to Cusco, with a woman and a couple. Two months later I bumped into the woman in Lima and a month after that, the couple in Ciudad Bolivar. In 2008 I travelled in Mali and discovered our British driver used to perform in a travelling theatre group based in the north west of England, for which my Dad did props and cooking. On the same trip in Mali, I met a couple from Brighton. In 2011 I came across them at the Yorkshire Sculpture Park near Wakefield. I am not only fascinated by the fact that, in all these cases, we happened to be in the same place or town (not so very unusual considering some well-worn travel routes), but on the same spot at the very same time, or even just determined by the direction in which I looked while walking down the street. Also, is the very fact that I have had so many of these coincidences, in itself, coincidental? One non-travel-related coincidence: Many years ago I lived in a flat in Sunderland. My best friend lived in Rochdale. One day I called and she was out. I tried my key in her front door and it unlocked it. I have no idea what made me try it!