A casino is an establishment that allows patrons to gamble by putting money on games of chance or skill. These casinos may also offer food and beverages, a place to rest and relax, or entertainment. They are often associated with opulence and luxury, creating a special atmosphere for guests to enjoy.

The precise origin of gambling is unclear, but it is believed to have existed in some form throughout history. Today, many casinos are incorporated into resorts or entertainment complexes that provide an array of services and amenities. This can include luxury spas, gourmet restaurants, shopping boutiques, and golf courses. Some casinos are even home to top-billed entertainment shows that range from high-flying circus acts to musicians topping the Billboard charts.

Casinos use a variety of methods to ensure security. Many have video cameras to monitor patrons and staff. Those that offer table games, such as blackjack, usually employ dealers who facilitate the game. Roulette tables have built-in microcircuitry that track bets minute-by-minute and warn the dealers of any anomaly; and craps machines are monitored for statistical deviations.

In addition to the standard fare of table games, casinos may also offer poker tables, baccarat (known as chemin de fer in Britain and trente et quarante in France), and other card games. These card games involve a great deal of skill, and the casino makes its profit by taking a small percentage of each pot or charging an hourly fee to rent tables.