A casino is a gambling establishment where people play games of chance or skill. In most games the house has a built in advantage over the players, which can be as low as two percent, and it is this advantage that earns casinos millions of dollars annually. The casinos use their edge to attract customers and encourage them to gamble, often providing perks such as free rooms, food and drink, and other entertainment.

In the twentieth century, the popularity of casinos spread worldwide, with some gaining their fame through movies such as Ocean’s 11. These days, casino destinations are as exotic as Venice and Monaco, and offer luxurious accommodations and top-notch restaurants, in addition to numerous table games, slot machines and poker rooms.

Casinos are built around noise, light and excitement. They are designed to distract and entertain their patrons, and they often feature loud music, dancing fountains, a variety of casino games and an extensive range of dining options. Some even offer horse racing and other sports betting.

Despite their glamorous surroundings, many casinos are known for their security measures. Security starts on the casino floor, where employees keep a close eye on patrons to spot cheating, like palming or marking cards or dice. Dealers are trained to spot these blatant tricks, and pit bosses can look for patterns in betting that may indicate collusion or fraud.

Because the house has a built in advantage, most casinos make their money by charging players a commission on the games they play, called the vig or rake. This can vary between games, but can be as high as 10 percent in some cases.