A casino is a facility for gambling. In addition to providing traditional table games like blackjack and roulette, most casinos feature a wide variety of electronic gaming machines. Some casinos also offer sports betting and other forms of gambling. Some casinos are renowned for their live entertainment, top-notch hotels and spas, and world-class restaurants.

In the beginning, many of these establishments were under mob control. However, real estate investors and hotel chains realized the potential profits of casinos and purchased them from the mobsters. This allowed them to operate their casinos without the interference of organized crime. Casinos are now a major part of the tourism industry, with some even having their own hotels.

The advantage of casinos over their patrons is mathematically determined and constant; this is known as the house edge, and it ensures that the casino always makes a profit. In some countries, the casinos are licensed to charge higher amounts for certain games (e.g., blackjack) than others (e.g., baccarat). Casinos may also offer special inducements to big bettors.

Due to the large amount of money handled within a casino, both patrons and staff may be tempted to cheat or steal, either in collusion with one another or individually. To prevent this, most casinos employ a number of security measures, including security cameras throughout the facilities. In addition, table managers and pit bosses are constantly observing the games and patrons to spot any suspicious activities. In recent years, some casinos have begun to use computerized systems for game supervision. These systems enable the casinos to oversee the exact amounts wagered minute by minute and to quickly discover any anomalies.