Probably SNY of our NATIONAL PARKS! But I'm sure GOD was YELLOWSTONE when I was there! The diversity of that park. Oh, the waterfalls,canyons, mountains, the valleys. The geyers, the furmoles, spitting mud, hot springs filled w/lichens, the sulphur pits. The bison, the elk,the bear( OH,NO!), the fish .Sheep eaters cliffs. OH, NO,- the steep narrow paths! I'm sure I've used some wrong discriptors, been awhile since I've been. The extreme diversity of this park made me fall in love w/ it 35yrs ago!Have been to quite a few National parks, but this one remains my #1!Oh , don't forget it OLD FAITHFUL!