I know it's the opposite of what was asked but I really would like to tour extensively in the USA. I know equally that it's a cliché but the whole 'On The Road' Kerouac thing of just travelling town to town really does appeal to me.
I lived and worked in Boston, Mass for a year and I used to travel out of the city when I had the time. That really did wet my appetite for the country. Up-state NY, New Hampshire, Vermont etc are beautiful beyond believe. I really got an impression of how hugely variable the USA is and I wanted to see more.
It'd take a lifetime though, to do it anything like any justice.
But in the theme of the thread, there are loads of places I never think about visiting. I've no burning desire to that 'experience different culture' thing generally. I can watch tele and see that people do things differently. Besides, who really wants dysentery anyway!
I remember flying back from Thailand after a month there and in Burma and deciding that that'd be my last such 'holiday'. I enjoyed it greatly but it felt like I'd reached a natural end point. These days, holidays are about just chilling out, doing very little, r&r kind of thing. Cycle touring is ideal for me, as it's about the travelling rather than the destination.
I've been skiing maybe 3 or 4 times. I enjoyed it but not enough to justify the expense of it.