Casino (also known as a gambling house or kasino in Spanish and German) is an establishment for certain types of gambling. It may also host live entertainment and other events. Many casinos are integrated into resorts, hotels and/or restaurants.

In modern casinos, security is a major concern. Because large amounts of money are handled within the building, both patrons and staff may be tempted to cheat or steal, either in collusion or independently. Elaborate surveillance systems offer a high-tech “eye in the sky” that allows security personnel to monitor every table, window and doorway at once; and in some cases to adjust the cameras to focus on specific patrons.

Slot machines generate a significant proportion of the income of most casinos; players simply place money in a machine, pull a lever or push a button, and watch as bands of colored shapes roll on reels (physical or video). The odds are set before each spin; no skill or strategy can change the outcome.

Although gambling probably existed long before recorded history, the first casinos developed in the 16th century as a result of a gambling craze that swept Europe. Italian aristocrats would hold private parties at places called ridotti, where they could gamble in privacy and without the watchful eye of the Inquisition. Today, casinos are found around the world. They are often built as a combination of a hotel, restaurant, shopping, and gaming facilities; some even have swimming pools, water slides, and limo service to make the experience as enjoyable as possible.