If you happen to drive between Las Vegas and the Grand Canyon, or even if it's not on your way, you would want to make Hoover Dam part of your itinerary. The place is huge and you will, most likely, be blown away by it's size and beauty. To think about this place been created way before advanced technology was available, way before the advance world that we live in today, would make you appreciate this place even more. If you park on the Arizona's side, parking will be free and you can simply walk to the other side. This is one of the most beautiful places that Nevada has to offer.