For all you interested in earth science, Yellowstone, or those who've read Harry Turtledove's disasterporn (actually, it wasn't-it was rather factual and a good read) Supervolcano series....
I'm going there this summer.
An incredible place to visit; and potentially dangerous in many ways, from geysers to thermal pools to grizzly bears. Nature can be quite unforgiving, yet spectacularly beautiful.
@arronpaul46, yes, I believe that happened late last year, or early this year. His body just basically dissolved. You can't dick around in those places.
Impending doom or not, Yellowstone is very stunning.