The Chickasaw Nation owns and operates WinStar World Casino. Because casino gambling is prohibited in Texas, hundreds of Texans travel to Thackerville to play slots, table games, and poker. So, why does such a little town require such a large casino? The reason is straightforward: it is the most convenient casino near Texas. Thackerville, Oklahoma, has a population of only 440 people and is located in the middle of nowhere. The world's second-largest casino is a tribal casino in Thackerville, Oklahoma. Game in a Land-based (Source: Freepik) WinStar World Casino | Thackerville, Oklahoma, USA If you're curious to discover where these colossal casinos are and what makes them stand out, join us on this journey. Even Sin City doesn't have any entries in the top 10. In this article, we'll explore the top five most prominent casinos in the world, and surprisingly, none of them are located in Las Vegas. However, the global expansion of gambling since the 1990s has resulted in larger casinos being built worldwide, surpassing even the ones in Las Vegas. It's true that Sin City was once the gambling capital with its flashy casinos dominating the 20th century. When it comes to the world's largest casinos, Las Vegas often comes to mind first. WinStar World Casino | Thackerville, Oklahoma, USA.