A casino, or , is a gambling establishment where customers can play games of chance for money or other items of value. Some casinos also offer food and drinks to their customers. Casinos are most commonly found in the United States, but are also located around the world and on some American Indian reservations. Most casinos offer traditional table games like blackjack, roulette, craps, and baccarat, and poker. In addition to these games, some casinos have slot machines and video poker.

The opulence and grandeur of many casinos create an immersive experience for their customers, inviting them to feel like they have entered another world. Often, these venues are housed in iconic locations that have historical significance, adding to their allure. For example, the Casino de Monte-Carlo has been a symbol of luxury and glamour since its founding in 1863.

Due to the large amounts of money handled within a casino, both patrons and staff may be tempted to cheat or steal. This is why most casinos have strict security measures in place to prevent such behavior. These measures usually include a physical security force and a specialized surveillance department.

In modern casinos, technology is also used to supervise the games themselves. For instance, chips with built-in microcircuitry are monitored minute by minute and alert the casino if there is a statistical deviation from expected results; roulette wheels are electronically watched for anomalies as well. In addition, the use of closed circuit television (CCTV) is common in casinos.