Worlds of Fun is a 235-acre amusement park in Kansas City, Missouri, United States. The park opened in 1973 and was originally built by Mid-America Enterprises, owned by Lamar Hunt. In 1995, the company, now known as Hunt-Midwest, sold Worlds of Fun to Cedar Fair Entertainment Company, which currently owns the park. Worlds of Fun has an attached same-admission water park named Oceans of Fun.