Looping from the Valley of Fire, south along Lake Mead, Hoover Dam - one of man's greatest engineering marvels - comes into view. In fact, it's the 726-foot high dam that backs up Lake Mead, America's largest man-made reservoir.

Hoover Dam has more than 600,000 annual visitors and is surprisingly crowded most of the time. Guided tours via the Dam's elevators are available daily from 9 a.m. until 4:15 p.m. There's also a visitors center, complete with displays and a video presentation on the dam. Ample free parking and several food concessions are nearby.The dam is over 55 years old. It was started in 1931 and dedicated Sept. 30, 1935. It was the greatest dam of its time and is still the Western Hemisphere's highest dam. It was named for President Herbert Hoover, 31st U.S. President.

It was known for a time as Boulder Canyon Dam and Boulder Dam, but congressional action in 1947 restored the original name.

Bootleg Whiskey and the lack of safety practices killed 110 workers on the dam, but contrary to legends, no one is entombed there.

- For more information on Hoover Dam, call (702) 293-8376.