A casino is an establishment for gambling. Some casinos offer a mix of table games, such as blackjack and roulette, and other games, such as poker, where players compete against each other and the house. Casinos often feature entertainment such as shows and stand-up comedy, as well as restaurants and bars. In some countries, casinos are licensed and regulated by government authorities.

Casino gambling is legal in many countries around the world. In the United States, there are various types of casino gambling: commercial casinos, Indian casinos operated by American tribes, and racetracks. The largest commercial casinos are located in Las Vegas and Atlantic City, with additional facilities in Reno and the Rio All Suite Hotel and Casino. The Bellagio in Las Vegas is perhaps the best known of all casinos, having been featured in countless movies and television shows.

In addition to glitz and glamour, most casinos also use psychological manipulation to encourage gamblers to spend more money than they intend to. They use a variety of techniques to create a manufactured euphoric experience, including odors, lighting, and music. One study found that people put more money into slot machines when listening to low-tempo music than when hearing high-tempo music.

Casinos are becoming increasingly sophisticated and technologically advanced, with video cameras monitoring game play to spot cheating or other irregularities; chips with microcircuitry monitor betting patterns on tables to allow for instant verification of winnings; and roulette wheels are electronically monitored to discover any statistical deviations from their expected results. Despite the rise of online gaming, the casino remains a popular destination for gamblers.