Hoover Dam is a sight to behold. We have been there several times when visiting Las Vegas and have taken several of the tours over the years. Wanita did their hardhat tour back in 2000 where they would take you down into the bowels of the Dam. They don’t do that tour anymore which is a shame. They have now finished the new bridge and we haven’t been there to see it yet, but from friends, it’s amazing too.