A casino (or a gambling house) is an establishment offering various types of gambling activities. The term is a contraction of the Latin casino, meaning “house of games.” Casinos are most commonly found in the United States and Macau, and are widely considered to be the largest and most luxurious of their kind in the world. They are usually large, lavishly decorated buildings with a high number of gaming tables and slot machines. They are often combined with hotels, restaurants, retail shops and other tourist attractions. In some countries, casinos are regulated by government agencies.

In the United States, most casinos are licensed and regulated by state gaming control boards or commissions. These organizations are responsible for creating and enforcing regulations and rules for the operation of gambling businesses based on their jurisdictions’ laws. Casinos are also required to have a certain level of security. Typically, this is divided into a physical security force and a specialized surveillance department. The latter is used to monitor the activity of patrons, both on and off the casino floor.

The minimum legal age to gamble in the United States varies by state and gambling product, but is usually 21. In addition, players must be able to prove their age in order to play most casino games. Casinos may also have additional wagering limits and restrictions, such as a maximum amount of money that can be wagered on a single game or event.