A casino is a building where people can gamble and play games of chance. It is often associated with a resort and can include non-gambling amenities such as restaurants, bars, gyms, swimming pools, shopping areas, and entertainment venues like theatres and museums. Casinos are found in many cities around the world and attract millions of visitors each year.

The casinos are financed by gambling revenues, which must exceed losses to break even. This is achieved through the use of mathematically determined odds, which give the house a constant advantage over the players. In games where skill is involved, the edge can be smaller. Casinos also generate revenue through the sale of food and beverages, as well as from slot machines and other electronic gaming devices.

Because of the large amounts of money handled within, there is a great temptation for patrons and staff to cheat or steal, either in collusion with each other or independently. As a result, casinos spend a lot of time and money on security measures. These may include cameras, physical barriers, and trained personnel.

Successful casinos bring in billions each year for the owners, corporations, investors, and Native American tribes that operate them. They also provide jobs, and tax revenues for local governments. In addition, casinos are often located in or near tourist destinations and serve as major attractions for their cities. As such, they compete with each other to offer the best gaming and entertainment experiences for their customers.