Las Vegas is often referred to as Sin City because of its numerous adult attractions, which some may see as immoral, or sinful. This city, located in Nevada, is one of the most-visited cities in the world. It has numerous venues for adult entertainment, including gambling. Sexual services and adult beverages also are available most of the time. Las Vegas was also considered to be a city under mob rule at one time.

Millions of people visit Sin City each year. Although there are some family friendly attractions in this city, most sites are geared toward the adult visitors. The majority of these activities are considered to be immoral by many.

Las Vegas is probably most known for gambling and betting, which may thought of as sinful. Dozens of casinos and casino-hotels operate in Las Vegas. Las Vegas Boulevard, commonly referred to as the Las Vegas strip, or the strip, is where many of the flashier and best known casinos operate. These are often open and full of patrons around the clock.

Lust is considered to be another sin, and in Sin City there are several ways to satisfy one's lust. Gentlemen's clubs, better known as strip clubs, in Las Vegas are often frequented by both men and women. In these clubs, patrons can watch, and sometimes participate, as male or female dancers seductively disrobe.

Prostitution is also not uncommon in Sin City. Although it is illegal in Las Vegas, prostitutes can be often be found walking down the street. They can also be found soliciting clients in massage parlors, casinos, bars, and hotels.

Nevada is the only state in the United States where prostitution is legal. Only certain counties, however, allow this, and Las Vegas is not in one of these counties. Many of the brothels are located in the empty Nevada desert, just a short trip from Sin City.

Alcoholic beverages can also be found fairly easily in Sin City. Nearly every hotel and casino has a bar. Many casinos even serve free drinks to those who are gambling. Drinking establishments can also be found outside of the casinos.
Along with its many other vices and sins, the history of Las Vegas history also is linked to organized crime. For a good part of the 20th century, there was an abundance of mob activity. Many of the major hotels and casinos were started or run by infamous mobsters. Frank Detra, friend to Al Capone, started one of the very first Las Vegas casinos on the strip, for instance. Benjamin "Bugsy" Siegel, Lucky Luciano, and Meyer Lansky were a few more infamous mobsters involved in the development of Sin City.

Near the end of the 20th century, however, city officials began trying to clean up the city. Their goal was to shed the Sin City image and make more families want to visit. The mission was partly successful, but since then, marketers have given up on the family image. Instead, Las Vegas is advertised as a place where adults can have fun and sin a little.