A casino is a place where people can gamble. There are different types of gambling games, and most casinos also have food and drinks. Casinos are regulated by the law and usually have cameras to monitor patrons. Some casinos have special rules, such as requiring players to keep their cards visible at all times. Some casinos are famous for their decor, like the Bellagio in Las Vegas, which was featured in the movie Ocean’s 11.
Gambling probably predates recorded history, with primitive protodice and carved six-sided dice appearing at the earliest archaeological sites. But a casino as a place for people to find a variety of ways to gamble under one roof did not appear until the 16th century, when a gambling craze swept Europe. Italian aristocrats held private parties in houses called ridotti, and though technically gambling was illegal, they rarely were bothered by authorities [Source: Schwartz].
Today, casinos are generally large places that feature table games, slot machines, and other gambling activities. They often have restaurants and free drinks, and they may put on stage shows to attract customers. But there have been less-lavish establishments that have housed gambling activities and still been called a casino (see definition 2).
A mathematical expectancy of profit gives every game in a casino a negative net profit. To offset this, casinos reward big bettors with free or reduced-fare transportation, luxury hotel rooms, tickets to shows, and even limo service and airline tickets.