A casino is a gambling house or room where various forms of gambling games are played. The games usually available are poker, blackjack, roulette, baccarat and craps. In addition to these table games, casinos often offer electronic gaming machines such as slot machines and video poker. Casinos can be found in many countries around the world, and they are often associated with luxury and glamour.

A modern casino is a complex structure that combines entertainment, dining, shopping and gambling. Most major cities have one or more casinos. The United States leads the world in the number of casinos, with Las Vegas being the largest gambling city. Other famous casinos include the Monte Carlo in Monaco and the Foxwoods in Connecticut.

In the 21st century, casinos have become increasingly glamorous and sophisticated. Some are integrated into resorts or hotels, while others stand alone as large standalone buildings. Many have extensive entertainment venues, with big-name performers appearing in concerts and shows. Casinos are also known for their security measures, with a dedicated staff and specialized surveillance departments.

In the United States, legal casinos are typically operated in cities that are best known for tourism or for their gambling, such as Atlantic City in New Jersey and Chicago in Illinois. More recently, casino gambling has spread to American Indian reservations, which are not subject to state laws prohibiting gambling. In Europe, the oldest and most famous casino is the Casino de Monte Carlo in Monaco, which opened in 1863.