Have always lived “east of the pond” – never visited the Western Hemisphere, and to my regret, not likely to now (retired, on a small pension).
Countries which I have been to, could be reckoned at a variety of numbers, depending on how strict or generous the criteria applied: by my figuring – strictest, 20; most generous, 28.
UK (my own country)
Germany (both East and West thereof, both before and after reunification)
Slovakia (both this country, and Czech Rep., both before and after Czechoslovakia split into those two)
People’s Republic of China
Yugoslavia, before it broke up only – in course of which travels I visited Serbia, Croatia, Slovenia and Bosnia.
Sweden (spent about 4 hours in the country, as part of a “mini-cruise” from England to Goteborg and back – primary objective the sail, more than seeing Sweden).
Ukraine (spent about an hour in the country, as part of a Poland-to-Poland train journey whose route ran through a corner of the then-Soviet Ukraine).
Tajikistan (in course of a flight London – New Delhi by Tajik Air, spent an hour or so landed at Dushanbe airport – no opportunity to get out of the plane).