The 3d model in the visitor center reveals so much more. Standing in Yosemite valley looking up at Half Dome is amazing, but you only see it from one angle. By exploring that model you could experience the landscape as if you are a bird (or Superman) and able to fly around. For me the highlight was the always the miniature model of whatever park it was. When I was a kid I was dragged through more National Park visitor centers than I can remember.
