A casino, also known as a gambling house or a gaming establishment, is an entertainment venue that offers various types of gambling. These venues may include restaurants, bars, retail shopping and more. Some casinos also offer live entertainment such as concerts and shows. Many states have legalized casinos, and they generate huge amounts of revenue. The largest concentration of casinos is in Nevada, followed by Atlantic City and Chicago. Native American casinos are also rapidly expanding.

Something about the environment of a casino, or perhaps just the presence of large sums of money, encourages people to cheat, steal and lie. Because of this, casino security is a top priority. Casinos spend a great deal of time, money and effort on surveillance and security. They use everything from cameras to catwalks in the ceiling that allow surveillance personnel to look down, through one-way glass, on table games and slot machines.

Despite their high security measures, casinos are still prone to cheating and theft by both patrons and staff. For this reason, most casinos require all patrons to sign a self-exclusion form and have them on file before they can play. Casinos must also post signs warning of the dangers of problem gambling and provide contact details for specialized help. In addition, most states have incorporated responsible gambling into their casino licensing requirements. Gambling addiction is a real and serious problem that can affect anyone, regardless of age, wealth or social status. It can cause financial ruin, mental distress and family problems.