A casino is an entertainment facility with games of chance and skill. From the swank rooms of Las Vegas to the tinier gambling dens and pai gow parlors of New York City, casinos draw in visitors from around the world. Successful casinos pull in billions of dollars each year for companies, investors and Native American tribes that own them. The profits from games of chance like slot machines, blackjack, roulette and craps are the foundation of the casino industry.
A typical casino has a number of security measures in place. Security begins on the casino floor, where employees watch over table games and patrons to make sure everyone is playing fair. Dealers keep their eyes peeled for blatant cheating, such as palming cards or marking dice. They also look for suspicious betting patterns, which may indicate a player is trying to tilt the odds in their favor. In addition, some casinos have catwalks above the casino floor that allow surveillance workers to view patrons through one-way mirrors.
Casinos are also known for their high-end services and amenities. Many offer free show tickets, discounted hotel rooms and other perks to bring in customers. Some casinos even have a variety of restaurants, shopping centers and spas. However, despite these extras, the main reason to visit a casino is to gamble. Gambling is a popular activity worldwide, with some estimates of the total value of bets made on games of chance at any time to be as much as $4 trillion.