The first reported visit to the valley by someone of European descent was Raphael Rivera in 1829.Las Vegas was named by Spaniards in the Antonio Armijo party, who used the water in the area while heading north and west along the Old Spanish Trail from Texas. In the 1800s, areas of the Las Vegas Valley contained artesian wells that supported extensive green areas or meadows (vegas in Spanish), hence the name Las Vegas.
John C. Frémont traveled into the Las Vegas Valley on May 3, 1844, while it was still part of Mexico.He was a leader of a group of scientists, scouts and observers for the United States Army Corps of Engineers. On May 10, 1855, following annexation by the United States, Brigham Young assigned 30 missionaries of The Church of Jesus Christ of Latter-day Saints led by William Bringhurst to the area to convert the Paiute Indian population to Mormonism. A fort was built near the current downtown area, serving as a stopover for travelers along the "Mormon Corridor" between Salt Lake and the briefly thriving colony of saints at San Bernardino, California. However, Mormons abandoned Las Vegas in 1857. Las Vegas was established as a railroad town on May 15, 1905, when 110 acres (44.5 ha) owned by Montana Senator William A. Clark's San Pedro, Los Angeles and Salt Lake Railroad, was auctioned off in what is now downtown Las Vegas. Las Vegas was part of Lincoln County until 1909 when it became part of the newly established Clark County. The St. Joan of Arc Catholic Church near 4th and Bridger in downtown was founded in 1910.Las Vegas became an incorporated city on March 16, 1911.
Las Vegas started as a stopover on the pioneer trails to the west, and became a popular railroad town in the early 1900s. It was a staging point for all the mines in the surrounding area, especially those around the town of Bullfrog, that shipped their goods out to the rest of the country. With the proliferation of the railroads, Las Vegas became less important but the completion of the nearby Hoover Dam in 1935 resulted in the growth of residents and tourism. The dam, located 30 mi (48 km) southeast of the city, also formed Lake Mead, the world's largest man-made lake and reservoir. Today, tours are offered into lesser known parts of the dam. The legalization of gambling in 1931 led to the advent of the casino-hotels, for which Las Vegas is famous. The success of the city's initial casino businesses was owed to American organized crime. Most of the original large casinos were managed or at least funded under mob figures Benjamin "Bugsy" Siegel, Meyer Lansky or other mob figures at this time.With the arrival of billionaire Howard Hughes in the late 1960s, who purchased many casino-hotels and television stations in the city, legitimate corporations began to purchase casino-hotels as well, and the mob was run out by the federal government over the next several years. The constant stream of tourist dollars from the hotels and casinos was also augmented by a new source of federal money. This money came from the establishment of what is now Nellis Air Force Base. The influx of military personnel and casino job-hunters helped start a land building boom which still goes on today.
Though Las Vegas's gambling revenues have been surpassed by Macau, the city remains one of the world's top entertainment destinations.
