A casino is a gambling establishment where individuals wager money on games of chance. The games played in casinos include poker, blackjack, slot machines, and roulette. Almost every country has laws regulating the operation of casinos. In most cases, the legality of casinos depends on their ability to generate revenue and avoid crime. Because large sums of money are handled in casinos, they can be vulnerable to both cheating and theft by both patrons and employees. To counter these threats, most casinos have extensive security measures in place.

A number of famous casinos can be found around the world. They are typically built near or combined with hotels, resorts, restaurants, shopping malls, and other attractions. Some casinos are also known for hosting live entertainment events, such as concerts or stand-up comedy. The casino industry is a major source of income for many nations.

Gambling in one form or another has been a part of human culture for millennia, with evidence of dice playing dating back to 2300 BC and card games appearing in the 1400s. Modern casinos are designed with a variety of gambling games in mind, including baccarat (known as chemin de fer in the UK and European continental casinos), blackjack, and trente et quarante in French casinos.

Casinos are popular worldwide, with the biggest ones attracting high rollers from across the globe. From Las Vegas to Monaco and beyond, these exclusive casinos offer opulent suites, spas, and fine dining alongside the standard roulette wheel and blackjack table.