On the drive from Vegas to the Grand Canyon, we had to stop at Hoover Dam. Unfortunately there were no tours that day so we didn't get to go into the dam, but we did walk along it and went up to the observation deck.
Of the Lake Mead reservoir.
The memorials to the building of the dam.
On the way to the Grand Canyon Darren had his first In and Out Burger experience. He almost convinced me to go again the following day on the way back to Vegas!