This might be the highlight of our recent trip to Las Vegas.  Even the kids were interested - for a while.  We even went on the Power Plant Tour as you can see from the shots of the original single generator embedded in the floor of the generator room.  You can also see how low the water level is in Lake Mead.  These photos of the Hoover Dam and also of the Mike O'Callaghan–Pat Tillman Memorial Bridge barely give you an idea of the scale and impressiveness of both structures.