A casino is a gambling establishment that offers a variety of games of chance. It is a major source of income for many countries. In the 21st century, casino gambling has spread throughout the world. It is now common for casinos to offer high-stakes gambling and other luxury amenities to attract gamblers.

Most of the world’s casinos are in cities with large populations and a history of legalized gambling. The Bellagio in Las Vegas is probably the best-known casino in the world, largely because of the movie Ocean’s 11. It offers a wide selection of table games and slot machines as well as luxurious accommodations. It also features gourmet restaurants and high-end shopping, such as Hermes and Chanel.

Casinos earn billions of dollars a year for their owners, investors, and Native American tribes. State and local governments receive a share of the profits through taxes, fees, and other payments. In addition, casinos help promote tourism in their regions.

There are no universal rules about how casinos must operate, but they must be licensed and regulated by local authorities. Casinos are also expected to protect their customers from fraud, theft, and other crimes. To do this, they employ a variety of security measures, including surveillance systems and security guards.

In order to maximize their profits, casinos must draw gamblers from a large geographic area. They achieve this by offering attractive inducements, such as free entertainment, hotel rooms, and transportation. Casinos also reward loyal patrons with comps, or free goods and services, such as food, beverages, and show tickets.