Casino is a special place where people can gamble and play games of chance. It is a popular pastime and it can be very profitable for those who have the gambling bug. Many of these facilities are found in Las Vegas and Atlantic City. Others can be found in smaller cities and even some countries with legal gambling. The precise origins of gambling are unknown, but it has been found in almost every society throughout history. Casinos are gambling houses that allow patrons to place bets on games of chance, with the casino making a profit in exchange for an hourly fee. They may also provide free food and drinks to patrons. Those who are very big bettors may receive free hotel rooms, show tickets and limo service. These freebies are known as comps.
Most casino games have a built-in advantage for the house, called the house edge. The house edge ensures that the casino will make a profit, although not necessarily on every bet. This is true for all casino games except those in which players compete against each other (such as poker), where the house takes a commission or rake.
Most casinos employ a large staff of security personnel to prevent cheating and theft. In addition to the usual physical security force, most have a specialized surveillance department that monitors the activities of patrons in casino games and other areas. These security cameras are often mounted in the ceiling and can be adjusted to focus on particular suspicious patrons.