A casino, or gambling house, is a place where people gamble. Most casinos are renowned for the number of games they have, and for their glitzy atmosphere and stage shows. Some are known for their high rollers, and others are famous for attracting tourists and celebrities. Some casinos are built on or combined with hotels, restaurants, retail shops and other tourist attractions.

In the United States, casinos are usually operated by private corporations or Native American tribes. They are licensed and regulated by the state in which they operate. The most well-known US casino is probably the MGM Grand in Las Vegas, but there are many more. Some states have legalized casinos within their borders, while others restrict them to specific geographical areas.

Gambling has been a part of almost every culture throughout history. Its precise origin is unknown, but it appears to have been a social activity for as long as humans have existed. The modern casino evolved from the traditional gaming den, which was a small clubhouse for members of a particular social class.

Casinos earn profits by charging a “house advantage” on all bets placed. This may be as low as two percent, but over time this can add up to a considerable sum. To compensate for this, large casinos often offer extravagant inducements to big bettors, such as free spectacular entertainment, luxurious living quarters and reduced-fare transportation. Casinos also employ a variety of methods to discourage crime. Modern casinos typically divide security into a physical department and a specialized surveillance division.