There's always lists on the most popular countries. But in my travels, I've found going against the grain has been super rewarding - places like Chernobyl, in Ukraine, or the desert of Uzbekistan or ...
I'm aware that annually there's a North Pole marathon, and that would be one way of getting up there, if exhausting. What other options exist to get there, preferably economically (the marathon costs ...
I don't want to really fly there, it would take too long and probably would be prohibitively expensive for me. But nevertheless I am really wondering if it is already possible, and if so, how ...