Top of the dam
Between two states.
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A huge concrete arch-gravity dam in the Black Canyon of the Colorado River, on the border of Nevada and Arizona, about 48 kilometres south-east of Las Vegas. It holds back Lake Mead, the largest reservoir in the country. It was built between 1931 and 1936 during the Great Depression by thousands of workers, more than 96 of whom died, and was dedicated by President Franklin D. Roosevelt on 30 September 1935. Handed over more than two years ahead of schedule, it became a symbol of American engineering. Visitors walk along the top of the dam between the two states, where the clocks change as you cross time zones, looking down the vast concrete wall to the river below, and from the nearby Mike O'Callaghan–Pat Tillman Memorial Bridge the whole dam can be seen from above. Walking on top of the dam is free; the visitor centre costs about $15 and the power plant tour more, per visitor guides. Bring water and a hat, as summer heat is intense, and expect a vehicle security check on arrival.
Between two states.
The full view.
Behind the dam.
Black Canyon of the Colorado River, between Nevada and Arizona
Walking on top is free; the visitor centre is about $15, per visitor guides.