A casino, or gaming house, is an establishment for certain types of gambling. Casinos are most often built near or combined with hotels, restaurants, retail shops, and other tourist attractions. They may also be located on American Indian reservations or in other jurisdictions where gambling is legal. In the United States, there are over 1,000 casinos.

Most modern casinos use some form of surveillance technology, including cameras in the rooms and around the casino floor. Security personnel also patrol the facility and respond to calls for assistance or suspicious activity. In addition, casino mathematical specialists, known as gaming mathematicians and analysts, study the game statistics to determine the expected house edge of each machine or table. This information is then used to maximize the casino’s profits, or limit its losses.

The casino industry is regulated in most jurisdictions by laws or administrative codes that govern the minimum capital requirements, maximum payouts, and other aspects of the gaming business. The casinos are operated by private companies that are licensed or granted special permits by the regulatory authority. In some jurisdictions, the operators must also obtain a permit to advertise their services.

Some of the largest casinos in the world are based in Macau, China. Hotel Lisboa, designed to resemble a birdcage, is one of the most recognizable landmarks in the city, and houses over 800 slot machines and tables. The Venetian Macau on the Cotai Strip is another major casino. Other notable casinos include the Hippodrome in London and Caesars Palace in Las Vegas.