@peterquirk @poemblaze Having lived in Europe for 4 years 50 years ago I have no clue.. In fact, once I climbed the Alps in one country, got lost, ended up in another country I had no visa for and got officially smuggled through a 3rd country I had no visa for...
And when I was in Africa, there were no country boundaries. At one point, my tour guide took us on a special trail and after we got back, he pulled me aside and asked if I'd liked Uganda... a country I was explicitly not allowed to be!