A casino is a place where gambling is legal and people pay to play games of chance. Various games are played there, including card games like poker and blackjack, as well as dice games such as craps and roulette. Often casinos also offer other types of entertainment such as stage shows and restaurants.
Most modern casinos offer a variety of different games and have highly trained staff to supervise them. Security is also a big concern, and casinos spend a lot of money on cameras and other security measures. Something about the nature of gambling seems to encourage cheating and stealing, and so casinos devote a great deal of effort to prevent such activities.
Most casinos have special areas for high stakes gambling, and they reward the biggest gamblers with comps (gifts) worth tens of thousands of dollars. These rewards are meant to encourage big spenders to gamble even more. While there have been many controversies over whether casinos are addictive, most states now allow gambling and regulate it to some extent.