Located on the Colorado River, Hoover Dam was twice as high as any other structure of its kind in the world at the time of construction. This outstanding achievement, nearly 100 years old, is 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.

From the top of the dam, you'll have ample time to enjoy breathtaking views of Lake Mead, one of the world's largest man-made lakes, and you'll also stand at an overlook on the eastern edge of the gorge in Arizona. In addition, there are wonderful photo ops of the new Hoover Dam Bridge which stands 900 feet above the river.

Before returning to Las Vegas, you'll stop at a local park where herds of Big Horn Sheep often come down from the surrounding mountains to gather and graze on the sweet green grass.