A Casino is a gambling establishment where patrons gamble by playing games of chance, or by participating in table games such as blackjack, roulette and poker. Many casinos also offer non-gambling entertainment, such as restaurants, bars and swimming pools. Casinos can be found in Las Vegas, Monaco, Macau and many other cities throughout the world. The casino industry has a wide variety of business models, but the overall goal is to maximize revenue.
In the twenty-first century, casinos have become increasingly sophisticated in their use of technology. Video cameras monitor customers and games to prevent cheating; roulette wheels are electronically monitored for anomalies; and the betting chips have built-in microcircuitry that allows the casino to keep track of the amount of money wagered minute by minute. Casinos often offer comps (free goods or services) to regular customers. These may include free rooms, show tickets or even limo service.
Until the late 1970s, most American states prohibited casino gambling. However, after the success of Atlantic City and the opening of several Indian reservations that did not require state approval for casino gambling, most states amended their laws to permit it.
In the United States, there are more than 1,000 casinos, and new ones continue to open. Some are large and opulent, with spectacular decor and a mind-boggling number of games; others are small and intimate. Most casinos are licensed and regulated by a central authority, such as the state government, and some are owned by private companies such as hotel chains or even Donald Trump.