A casino is a gambling establishment where people can gamble on games of chance. It may also be a place where live entertainment is presented, such as musical performances or stand-up comedy. Casinos are often built near or combined with hotels, restaurants, retail shops, cruise ships and other tourist attractions. The term casino may also be used for establishments that serve certain types of alcohol, such as bars and nightclubs.

The precise origin of gambling is unknown, but it is believed to have been widespread in many cultures throughout history. In the modern sense of the word, a casino is a large building that features a variety of gaming tables and slot machines. Most major casinos are located in Nevada, with the majority of these in the Las Vegas Valley. Other large casino destinations include Atlantic City and Chicago.

Casinos have a number of security measures in place to protect their patrons and property. These include security cameras, which monitor all activity in and around the casino, and tight control of money flows. In addition, staff members are trained to detect and deter cheating and theft.

While some casinos have a reputation for being glamorous, others are known for offering a more down-to-earth experience. For example, the Bellagio in Las Vegas is famous for its dancing fountains and luxurious accommodations, but it has a more traditional casino inside, featuring table games, slot machines and poker rooms.