A casino is a gambling establishment where people can gamble cash or casino chips on games of chance. Some casinos specialize in certain games, such as blackjack or roulette, while others offer a wide variety of games. Gambling is an activity that has been around for millennia. Evidence of gaming has been found in China dating back to 2300 BC, and dice and playing cards appeared in Europe in the 1400s.
While the United States has the most casinos, many other countries are home to world-famous facilities as well. The city of Venice, Italy, is home to the oldest casino in the world, Casino di Venezia. Other famous casinos include the glamorous Caesars Palace in Las Vegas, which has hosted entertainers such as Frank Sinatra and Celine Dion.
In addition to a vast array of slot machines and table games, a casino can also feature live entertainment and restaurants. In the past, casinos often offered free goods or services to players known as comps. These included rooms, meals and tickets to shows. Some casinos even gave away airline tickets and limo service to top spenders.
Modern casinos rely on computers and video surveillance to monitor patrons and their actions at the tables and machines. These systems can spot a number of different types of cheating, including palming, marking or switching cards or dice. Each casino employee has a supervisor who watches them work and keeps track of their performance. In addition, casinos hire mathematicians to analyze the house edge and variance of different casino games.