I recommend everyone visit Yosemite once. The scale is mind-bending. The falls appear in slow motion because the water is traveling such a great distance. Enormous, ancient trees appear as peach fuzz atop the walls.
I can't think of another place where you can walk right up to something so massive rising out of the earth.
I climbed a much more modest, easy peak there 15 years ago, and saw the headlamps across the valley of climbers on el cap. Its an awe-inspiring scene in the literal sense.
If you go, take the time to hike away from the crowds. It's a zoo of cars but quiet and breathtakingly beautiful if you explore.