How many times have you heard "the pictures don't do it justice"? Trite, cliched...and true. There just isn't a substitute for standing at the edge of the Grand Canyon to understand its magnitude...unless it's standing down at the bottom...which I wouldn't know about because it was too cold and too short a trip to make the hike. Nonetheless, it was one of those rare times in my life when I've been speechless. Seeing it in winter with snow on some of the canyon walls? Added bonus.
I heard on the Travel Channel last night that you can put 1,500 Central Parks into it. Think about that for a minute.