The Grand Canyon is a steep-sided canyon carved by the Colorado River in the state of Arizona in the United States. It is contained within and managed by Grand Canyon National Park, the Kaibab National Forest, Grand Canyon-Parashant National Monument, the Hualapai Tribal Nation, the Havasupai people and the Navajo Nation. President Theodore Roosevelt was a major proponent of preservation of the Grand Canyon area, and visited it on numerous occasions to hunt and enjoy the scenery.



The Grand Canyon is 277 miles long, up to 18 miles wide and attains a depth of over a mile. Nearly two billion years of Earth's geological history have been exposed as the Colorado River and its tributaries cut their channels through layer after layer of rock while the Colorado Plateau was uplifted. While some aspects about the history of incision of the canyon are debated by geologists, several recent studies support the hypothesis that the Colorado River established its course through the area about 5 or 6 million years ago. Since that time, the Colorado River has driven the down-cutting of the tributaries and retreat of the cliffs, simultaneously deepening and widening the canyon.

For thousands of years, the area has been continuously inhabited by Native Americans, who built settlements within the canyon and its many caves. The Pueblo people considered the Grand Canyon a holy site, and made pilgrimages to it. The first European known to have viewed the Grand Canyon was García López de Cárdenas from Spain, who arrived in 1540.

Las Vegas officially the City of Las Vegas and often known as simply Vegas, is a city in the United States, the most populous city in the state of Nevada, the county seat of Clark County, and the city proper of the Las Vegas Valley. Las Vegas is an internationally renowned major resort city known primarily for gambling, shopping, fine dining and nightlife and is the leading financial, commercial, and cultural center for Southern Nevada.



The city bills itself as The Entertainment Capital of the World, and is famous for its mega casino–hotels and associated entertainment. A growing retirement and family city, Las Vegas is the 29th-most populous city in the United States, with a population of 603,488 at the 2013 United States Census Estimates. The 2013 population of the Las Vegas metropolitan area was 2,027,828. The city is one of the top three leading destinations in the United States for conventions, business, and meetings. In addition, the city's metropolitan area has more AAA Five Diamond hotels than any other city in the world, and is a global leader in the hospitality industry. Today, Las Vegas is one of the top tourist destinations in the world.

Established in 1905, Las Vegas was incorporated as a city in 1911. At the close of the 20th century, Las Vegas was the most populous American city founded in that century (a similar distinction earned by Chicago in the 19th century). The city's tolerance for numerous forms of adult entertainment earned it the title of Sin City, and has made Las Vegas a popular setting for films, television programs, and music videos.

"Las Vegas" is generally used to describe not just the city itself, but areas beyond the city limits—especially the resort areas on and near the Las Vegas Strip—and the Las Vegas Valley. The 4.2 mi stretch of South Las Vegas Boulevard known as the Las Vegas Strip is in the unincorporated communities of Paradise, Winchester, and Enterprise, located in Clark County.