A casino is a building or room where gambling takes place. Most casinos feature a wide variety of gambling games, such as blackjack, poker, and roulette. They also have bars and restaurants, and some even host live entertainment. Some casinos are also known for their extravagant decorations and architecture, often featuring fountains, towers, and replicas of famous landmarks.

Casinos are designed to attract large crowds of people and can be found in many cities around the world. Some are owned by large hotel and casino companies, while others are run by independent operators. In the United States, casinos are most often found in Las Vegas and Atlantic City. However, they are becoming more common in other areas as well, particularly on American Indian reservations.

Because of the large amounts of money handled within a casino, security is a major concern. Casinos employ numerous measures to prevent cheating and stealing by both patrons and employees. In addition to security cameras, most casinos have pit bosses and table managers who monitor each game. These personnel can often spot blatant cheating techniques such as palming or marking cards or dice.

Although gambling has occurred since the beginning of recorded history, with primitive protodice and carved six-sided dice discovered in ancient archaeological sites, the casino as a place to find a variety of gambling activities under one roof didn’t develop until the 16th century, when a gambling craze swept Europe. Some casinos, such as the Casino de Campione in Italy, are so large that they include a contemporary art gallery, three restaurants, and a three-ring rotating stage for live performances.