Located on the Colorado River, Hoover Dam at the time of construction was twice as high as any other structure of its kind in the world.  It is an outstanding achievement, nearly 100 years old, noteworthy not only for its enormous dimensions, complex design and intricate construction, but also for its illustration of man's outstanding ability to overcome the desert's summer sun, the dangers of a treacherous river, and the extreme hazards of great heights on the canyon's sheer walls.

This Extended  Exterior Tour includes  breathtaking views from the Top of the Dam, Lake Mead, the world's largest man-made reservoir, the eastern edge of the chasm in Arizona where you have fabulous views of the dam including Lake Mead. In addition, there are wonderful photo ops from the new Hoover Dam Bridge. Before returning to Las Vegas we stop at a local park where, in season, herds of Big Horn Sheep often come down from the surrounding mountains to gather and graze on the sweet grass.