Six Flags St. Louis, then known as Six Flags Over Mid-America, first opened in 1971 as one of the company's original three parks. Today, Six Flags St. Louis is home to ten roller coasters, including Screamin' Eagle and The Boss, a water park and nearly three dozen other attractions. In March, Six Flags announced that it sold the park to Enchanted Parks. Now under new management, join us for an opening day look at what to expect on your next visit to Six Flags St. Louis.