The first casinos can be traced back to the early days of ancient Rome. In those days, the casino was simply a gathering place for gambling and other social activities. The word "casino" actually comes from the Italian word for "little house." The first modern casinos were established in Venice, Italy in the 16th century. These early casinos were quite different from the ones we know today. They were more like social clubs, where people would gather to gamble and socialize. The first real casino in the United States was built in New Orleans in 1789. This new type of casino quickly became popular, and soon spread to other cities across the country. In the early 1900s, casinos began moving out of the cities and into more remote locations. This was in response to concerns about crime and corruption that were associated with gambling in the city. The most famous example of this is the Sahara Hotel and Casino in Las Vegas, which was built in 1947. The first online cas