A casino is a gambling establishment where people can play games of chance for money or other prizes. Gambling has been around for millennia in various forms, with evidence of dice in 2300 BC in China and playing cards appearing in Europe in the early 1400s. Modern casinos typically feature a variety of gaming machines, table games and entertainment shows. They are often located in exotic locations and have a high level of security.

Those who want to gamble must be of legal age and must follow rules set by the casino. To do so, they exchange cash for chips which are used to place bets. Some casinos offer a mix of different games, including slots and table games like poker, blackjack and roulette. Others focus on one particular game, such as baccarat. Table games are usually staffed by casino employees called croupiers, who deal the cards or spin the wheel.

In addition to standard security measures, many casinos use sophisticated technology to monitor their games. For example, some have catwalks that run across the ceiling above the tables, allowing surveillance personnel to look directly down on players through one way glass. Other technologies allow for the exact amount of money wagered to be monitored minute by minute, while roulette wheels are electronically monitored to discover any statistical deviations from their expected results.

Casinos are a major source of revenue for many countries and are often a significant tourist attraction. While many of the world’s best known casinos are in Las Vegas, a few other places have become synonymous with them, such as Monte Carlo, Singapore and Macau.