A casino, also called a gambling establishment or a gaming room is an establishment for playing games of chance. The games played in these facilities are usually games of pure chance, but some have an element of skill. The games are usually conducted by employees of the casino, known as croupiers or dealers. The types of games played in casinos include gaming machines, table games (such as blackjack, roulette, and craps), and random number games. Some casinos also host poker tournaments.

The precise origins of gambling are not well understood, but it is generally believed to have been a part of human society for millennia. Evidence of gambling has been found in many societies, including those of ancient Mesopotamia, the Roman Empire, and Elizabethan England. Modern casinos often combine entertainment with other attractions such as hotels, restaurants, retail shops, and even cruise ships.

The most prestigious and exclusive casinos combine high stakes with high luxury. From Las Vegas to China, Monaco to Singapore, these temples of temptation are decked out in opulent décor and offer everything from fine dining to dazzling shows.