A casino is a gambling establishment where games of chance are played for money or other prizes. The games usually include card games, dice, and even horse races. Casinos can also provide a variety of other entertainment, such as stage shows and free drinks. They can also offer luxury accommodations, such as suites and rooms with beautiful views.

In the United States, casinos are licensed and regulated by state gaming boards. Nevada is probably the best known for its casinos, although New Jersey and Atlantic City are also significant casino centers. In addition, some Indian reservations operate casinos that are exempt from state antigambling laws. Historically, casinos have been places where gambling was legal or at least tolerated, although there were also many illegal gambling operations.

Modern casinos use technology to control their games and monitor player behavior. For example, video cameras record the action at tables and slot machines. The chips in many casinos have built-in microcircuitry to track how much is being wagered minute by minute, and electronic systems supervise roulette wheels to detect any statistical deviations from expected results. Casinos also use specialized lighting, such as blue bulbs that reduce the effect of glare and neon colors that encourage people to gamble.

There is a lot of noise and movement in a casino, so it can be hard to concentrate on a game of chance. In addition, many casinos are designed around red, which is thought to make people lose track of time. This is why there are no clocks on the walls of most casino rooms.