U.S.-Based Journalist Dariush Sajjadi's life in Arizona

Hoover Dam is one of America's great engineering marvels. This massive structure, completed in 1935, crosses the Colorado River, linking Arizona and Nevada. It is 726 feet high and 1,244 feet long. Lake Mead, held back by the Hoover Dam, is the largest artificial lake in the United States. It is 110 miles long, and holds the equivalent of two years of flow of the Colorado River.

You can drive or walk across the dam for free, although there is a charge for parking. Another option is to take a tour of Hoover Dam or the Powerplant. The visitor center provides information on the dam and tours, and has a café with some basic food options.