A casino or casino is a place where people can play games of chance or skill. It can be a standalone building or part of a larger resort. A casino may also offer dining, entertainment and other amenities. Some casinos specialize in a particular type of game, such as poker, blackjack, or roulette. A large number of these facilities are located in the United States. The largest casino in the world is WinStar World Casino and Resort in Thackerville, Oklahoma. This massive gambling complex contains 1,324 slot machines, 185 table games and an enormous poker room. In addition, it features a contemporary art gallery, three restaurants and a three-ring rotating stage for live performances.

A thriving business worldwide, casino gaming attracts millions of visitors every year. In the United States, the industry generates $261 billion in annual revenue and employs just north of 1 million people. The ten largest casino-hotels in the world can each comfortably accommodate more than 20,000 gamblers at any given time, and some of them have sprawling grounds that include opulent restaurants, designer shops and top-billed entertainment shows.

Because of the large amount of money handled within casino premises, employees and patrons alike may be tempted to cheat or steal, either in collusion with one another or independently. To counter this, modern casinos usually have a combination of physical security forces and a specialized surveillance department that operates a closed circuit television system. These measures have proved very effective in reducing crime in casinos.