I've been here about three or four times now and it is always a treat visiting this place. Arrive early (9-10am) if you want to beat the traffic. The only reason why this place is not getting a 5 star is because they no longer allow people to go outside and the base of the dam. My 1st time here was around 93 and boy was it amazing looking up at the dam and seeing how high it was. Dam you terrorist for killing the best part of the tour! If you are in Vegas, make this a stop on your trip.