The Hoover Dam is a massive concrete arch-gravity dam located on the border between Nevada and Arizona. Completed in 1936, it was built during the Great Depression and stands as a testament to American engineering prowess. The dam creates Lake Mead, the largest reservoir in the United States, and provides water and hydroelectric power to millions of people. In addition to its practical benefits, the Hoover Dam is a popular tourist destination, attracting over a million visitors each year. Its impressive structure and scenic surroundings make it a symbol of innovation and resilience in the face of adversity.