A casino is an establishment for certain types of gambling. It is often built near or combined with hotels, restaurants, retail shops, and/or cruise ships. Some casinos also feature live entertainment and other events such as stand-up comedy or concerts. In modern times, casinos are typically heavily guarded and patrolled by security personnel. They may also have a dedicated surveillance department that operates a closed-circuit television system known as the eye in the sky. Casinos may also employ other security measures to prevent cheating and stealing by patrons, such as requiring players to keep their cards visible at all times when playing card games like blackjack.

There are a number of notable casino-hotels worldwide, including the Bellagio in Las Vegas, the Wynn Las Vegas, and the Venetian Macau. The Bellagio, in particular, is known for its elegant rooms and suites. In addition to its casino, the hotel also houses several restaurants and bars.

The largest casino in the world is the Venetian Macau, which boasts over 3,000 slot machines and a massive poker room. It is one of the most popular tourist attractions in Asia, with millions of visitors each year. The casino is a major source of revenue for the city, and it is also considered to be a premier tourist destination for people from all over the world.