We took the Hoover Dam tour last summer when on our way back home after taking a grandson on a trip to Yosemite and Sequoia National Parks for his high school graduation. Notice we are from the mountains of Colorado. The temperature was 109 degrees and my husband 'complained' about the temperature; the tour guide informed him that soon the temperature would be 130 degrees. We found the tour very interesting and well worth the time. We toured the rest of the town on our own and did a lot of walking. I think a bus tour would have been interesting but there were time constraints- we were on to St. George, Utah, to go to Superior Threads. Now, that was my favorite tour of the trip!