Okay, since I've been to Bosnia (hi Pete) when it was part of the former Yugoslavia - I will toss my hat in the ring for what is now the Czech Republic, also in the same Iron Curtain timeframe. I was only in Prague and never made it to what is now Slovakia, so will leave that for someone else as per the "one man, one country at a time" rule.
Unfortunately I cannot post photographs since they reside at my ex-spouses place, where all men fear to tread
Also, how to handle Antarctica? Claimed by many and none at all...depending upon who is doing the talking.