A casino is an establishment for gambling. In addition to games of chance, many casinos feature entertainment attractions such as theaters and musical shows. Some casinos have restaurants and bars. They may also offer hotel rooms and other types of accommodation. In some cases, casinos are built near or combined with other tourist destinations and recreational facilities, such as golf courses and ski resorts.

A number of people may be tempted to cheat, steal or otherwise defraud in a casino, either in collusion with one another or independently; casinos have extensive security measures to prevent this. Cameras are placed throughout the casino and staff watch for suspicious activity. Security personnel also enforce rules of conduct and behavior. In addition to cameras, casinos use technology to supervise the games themselves. For example, betting chips with built-in microcircuitry enable casinos to monitor the amount wagered minute by minute, and roulette wheels are electronically monitored to discover any statistical deviations from expected results.

While elaborate themes, lighted fountains and shopping centers might draw in the crowds, casinos would not exist without the billions of dollars raked in by their games of chance. Slot machines, blackjack, roulette, craps, keno and baccarat generate the vast majority of the billions in profits that casinos make every year. Moreover, these games are not just fun and exciting; they can be very lucrative as well.