Object Details Creator Smithsonian Channel Views 359,439 Video Title How the 726-Foot-Tall Hoover Dam Was Built Ahead of Schedule Description ...

Construction of the Hoover Dam, on the Nevada-Arizona border, began on this day in history, July 7, 1930. It covers over 220 acres and is a National Historic Landmark.

Don't miss the big stories. Like us on Facebook. A feat of modern civil engineering, Hoover Dam has stood tall and brought billions of visitors to Las Vegas since it was constructed in the 1930s.