A casino is a gambling establishment that offers a variety of games of chance for a fee. It may also offer food, beverages and entertainment. The exact origin of casinos is unknown, but they were first established in Europe by the end of the 18th century. Today, casinos are often built as a tourist destination, with elaborate themes and features that draw in visitors and generate revenue. Casinos are primarily places where people gamble by playing games of chance, but some have an element of skill (e.g., blackjack). The casinos earn billions of dollars from bets made by their patrons.

Casinos are often located on or near Indian reservations, and many American states have legalized Native American gaming. In addition, casinos are increasingly opening on riverboats and in other locations that are not subject to state antigambling laws.

In addition to offering a wide range of games, some casinos have themed restaurants, shopping centers and nightclubs. Others feature entertainment such as musical shows and lighted fountains. Casinos usually earn profits by charging patrons for admission and collecting commissions from players on games like poker and blackjack.

Something about the large amounts of money handled in a casino encourages cheating and stealing by both patrons and employees. Security measures are therefore important, and casinos spend a lot of time and money on them. Ask a casino employee if they know where the “hot” slot machines are; they are likely to be more than willing to share this information for a tip.