A casino is a place where people can gamble on games of chance. Many casinos offer a wide variety of gambling activities, including blackjack, roulette, and video poker. Some casinos also feature restaurants, spas, and other amenities.

In the United States, Las Vegas is the largest casino market, followed by Atlantic City and Chicago. Several American Indian reservations also operate casinos. The casino industry has grown significantly since the 1980s, as more states legalized it.

Casinos often hire security guards to monitor patron behavior and protect property. Because large amounts of money are handled within a casino, both patrons and staff may be tempted to cheat or steal. Various methods are used to prevent this, including the use of cameras and other electronic surveillance equipment. Casinos also have strict rules governing the actions of players and dealers, which can help deter fraud.

The interior design of a casino is intended to convey a high-end, luxurious atmosphere. Its color scheme is often black or red, and the lighting is dimmed to add drama. The casino floor is often carpeted or tiled, with a large prize (such as a sports car) displayed prominently. Many casinos have stage shows and dramatic scenery to enhance the casino experience.