A casino is a gambling establishment with a wide range of games and entertainment. These places offer a variety of gaming options, such as table and slot machines, and often have restaurants, hotels, and other amenities for gamblers and non-gamblers alike. The most famous casinos are in Las Vegas, but many cities around the world have one or more. Some are renowned for their architecture, while others are famous for their history or entertainment offerings.

Most casino games provide a predictable long-term profit to the house, known as the house edge or vigorish. Those that require an element of skill, such as poker and blackjack, allow players to decrease this advantage and increase their chances of winning. People who are skilled enough to eliminate the house edge are referred to as advantage players.

The largest casinos in the world can be found in some of the most prestigious locations. The Bellagio in Las Vegas is one of the most famous, with its stunning fountain shows and luxurious accommodations. Other casinos with a similar reputation include the Casino de Monte-Carlo, in Monaco; the Casino Lisboa, in Lisbon; and the Casino Baden-Baden, in Germany.

While the casino industry is often seen as a source of entertainment and excitement, it also presents some unique challenges to its operators. For example, the need for security and privacy is of great concern in a casino, as is the desire to attract and retain customers. These factors are influencing casino design, and many new projects incorporate elements of sustainability.