Hoover Dam in the context of "Rotor (electric)"

Clark County is the southernmost and most populous county in the U.S. state of Nevada, with 2,265,461 residents as of the 2020 census. The county is the location of the state's three largest cities, Las Vegas (the county seat), Henderson, and North Las Vegas, as well as the Las Vegas Strip, Nellis Air Force Base, and Hoover Dam. Clark County has 8,061 square miles (20,880 km) of land area, roughly the size of New Jersey.

Although the county has 70% of Nevada's population making it the 11th-most populous county in the United States, Clark County covers only 7% of Nevada's land mass. Despite having the name Las Vegas as part of their address, over 1 million residents live in unincorporated Clark County, with municipal services provided by the county. The county plays a role much larger than is typical in the US as it has direct jurisdiction over the Las Vegas Strip and such a large population.

Lake Mead is a reservoir formed by the Hoover Dam on the Colorado River in the Southwestern United States. It is located in the states of Nevada and Arizona, 24 mi (39 km) east of Las Vegas. It is the largest reservoir in the US in terms of water capacity. Lake Mead provides water to the states of Arizona, California, and Nevada as well as some of Mexico, providing sustenance to nearly 20 million people and large areas of farmland.

At maximum capacity, Lake Mead is 112 miles (180 km) long, 532 feet (162 m) at its greatest depth, has a surface elevation of 1,229 feet (375 m) above sea level, has a surface area of 247 square miles (640 km), and contains 28.23 million acre-feet (34.82 km) of water.

A national recreation area (NRA) is a protected area in the United States established by an Act of Congress to preserve enhanced recreational opportunities in places with significant natural and scenic resources. There are 41 NRAs, which emphasize a variety of activities for visitors, including hiking, camping, boating, fishing, swimming, biking, horseback riding, and wildlife viewing, in areas that include multiple-use management for both conservation and limited utilization of natural resources. They have diverse features and contexts, being established around reservoirs, in urban areas, and within forests. Due to their size, diversity of activities, and proximity to population centers, NRAs are among the most visited units of the National Park System, with six among the thirty most visited sites.

The first NRA was Lake Mead National Recreation Area, which was created by a 1936 agreement between the United States Bureau of Reclamation (USBR), which had built Hoover Dam, and the National Park Service (NPS), which had experience in managing visitors in the outdoors. Because the reservoir had disturbed the natural state of the environment, a new designation was devised that allowed for more intensive land use while maintaining the NPS's role in conservation and historic preservation. The system of NRAs grew as the USBR constructed more dams near urban areas where there was a need for outdoor recreation.

The Art Deco style, which originated in France just before World War I, had an important impact on architecture and design in the United States in the 1920s and 1930s. The most notable examples are the skyscrapers of New York City, including the Empire State Building, Chrysler Building, and Rockefeller Center. It combined modern aesthetics, fine craftsmanship, and expensive materials, and became the symbol of luxury and modernity. While rarely used in residences, it was frequently used for office buildings, government buildings, train stations, movie theaters, diners and department stores. It also was frequently used in furniture, and in the design of automobiles, ocean liners, and everyday objects such as toasters and radio sets.

In the late 1930s, during the Great Depression, it featured prominently in the architecture of the immense public works projects sponsored by the Works Progress Administration and the Public Works Administration, such as the Golden Gate Bridge and Hoover Dam. The style competed throughout the period with the modernist architecture, and came to an abrupt end in 1939 with the beginning of World War II. The style was rediscovered in the 1960s, and many of the original buildings have been restored and are now historical landmarks.