A casino is an establishment for certain types of gambling. In some cases, casinos are combined with hotels, restaurants, and retail shops. They may also be located on cruise ships or in other tourist areas. Casinos are often guarded by security forces, and some have catwalks where surveillance personnel can monitor activity from above.
In most cases, casino games involve some degree of skill or chance, but they are generally played against the house rather than other players. This gives the casino an advantage over the players that can be expressed mathematically as a negative expectation (or expected value), which is commonly referred to as the house edge. In some cases, the casino takes a commission from player winnings, which is known as rake.
There are more than 3,000 legal casinos worldwide, with most operating in cities or resorts. In the United States, the first modern casinos opened in Atlantic City in 1978, and the first riverboat casinos began appearing in the 1980s. In addition, many American Indian reservations operate casinos that are not subject to state anti-gambling statutes.
While the term casino can be used to refer to any type of gaming facility, some of the world’s most famous are found in glamorous locations. For example, in Baden-Baden, Germany’s Black Forest region, the Casino Baden-Baden is an opulent temple to luxury and class, offering everything from elegant poker rooms and roulette tables to 130 slot machines. Meanwhile, in the glitzy heart of Macau, east Asia’s Vegas, the casino Grand Lisboa is a dazzling example of surface decadence.