The City and County of Denver is the capital and largest city of the U.S. state of Colorado. It is located on the plains just east of the Rocky Mountains and forms the heart of the Denver-Aurora metropolitan area. The central downtown district is on the east side of the South Platte River, near its confluence with Cherry Creek, approximately fifteen miles from the foothills.Denver is the county seat of, and shares the same borders with, Denver County — one of the few consolidated city-counties in the United States. According to 2004 Census estimates , the city has a population of 556,835 and ranks as the 25th-largest in the United States and the sixth-largest state capital. The Denver Regional Council of Governments estimated that the 2005 population of the city was 579,744 (unofficial). The population of the Denver-Aurora metropolitan area was about 2,330,146, making it the twenty second-largest metropolitan area in the U.S. . The city claims to have the tenth largest downtown in the United States .Denver is nicknamed "The Mile-High City" because its official elevation, measured on the fifteenth step of the state capitol building's west side, is one statute mile (5,280 feet or 1,609 meters) above sea level. Also, a row of seats in the upper deck of Coors Field, home of Major League Baseball's Colorado Rockies (NL), is marked in purple (one of the team's colors) to indicate that the row is one mile above sea level. The city's elevation, as surveyed at Denver International Airport, is 5,431 ft (1,655 m).Denver has also been known historically as the Queen City of the Plains because of its important role in the agricultural industry of the plains regions along the foothills of the Front Range. Several US Navy ships have been named USS Denver in honor of the city.

Steamboat Springs, known as Ski Town USA, is a city in Routt County, Colorado, United States. The population was 9,815 at the 2000 census. It is the county seat of Routt CountyGR6. The town is an internationally known winter resort destination, highlighted by the Steamboat Ski Resort, which is on Mount Werner in the Park Range just east of the town. It also contains the much smaller Howelsen Hill ski area. It is located in the upper valley of the Yampa River, along U.S. Highway 40 just west of the Continental Divide at Rabbit Ears Pass.

Las Vegas is the most populous city in the state of Nevada, United States, and a major vacation, shopping, entertainment and gambling destination. It was established in 1905, officially became a city in 1911 and became the largest American city founded in the 20th century.The name Las Vegas is often applied to the unincorporated areas of Clark County that surround the city, especially the resort areas on and near the Las Vegas Strip. This 4½ mi (7¼ km) stretch of Las Vegas Boulevard is mostly outside the Las Vegas city limits, in the unincorporated town of Paradise.The center of gambling in the US, Las Vegas is marketed as The Entertainment Capital of the World, also commonly known as Sin City, due to the popularity of legalized gambling, availability of alcoholic beverages at any time (like all of Nevada), and various forms and degrees of adult entertainment. The city's glamorous image has made it a popular setting for films and television programs.