A casino (also known as a gaming house or a gambling establishment) is an establishment that allows people to gamble. Modern casinos are usually large, luxurious buildings. They are often built near or combined with hotels, resorts, restaurants, retail shops, and other tourist attractions. Some casinos specialize in specific types of games, such as poker, and some are known for hosting live entertainment events.

Gambling in some form has been part of human culture for millennia. Evidence of dice-based games dates back to 2300 BC in China, and the first card game appeared in the 1400s, followed by blackjack in the 1800s. Modern casinos offer a wide range of games and are located all over the world.

Besides offering the traditional casino fare of roulette and blackjack, some offer more high-end experiences like spas, fine dining, and even opulent suites. The most exclusive casinos are found in exotic destinations like Venice, Monaco, and Singapore, pairing a sense of history with the latest technology to create a unique experience for their guests.

Casinos are also famous for their nightclubs, where big-name celebrities perform. Some have long-standing residencies, such as Caesars Palace in Las Vegas, which has hosted performers like Frank Sinatra, Elton John, Rod Stewart, and Mariah Carey. In addition to the music, many casinos feature a range of other entertainment, such as theater shows, and even sports betting. Modern casino security is typically divided between a physical force and a specialized surveillance department. The former patrols the premises and responds to calls for assistance or reports of suspicious or definite criminal activity, while the latter operates the casinos closed circuit television system, which is often called “the eye in the sky.”