Knott's Berry Farm is a 57-acre amusement park in Buena Park, California, United States, owned and operated by Six Flags. In March 2015, it was ranked as the twelfth-most-visited theme park in North America, while averaging approximately 4 million visitors per year. The park features over 40 rides, including roller coasters, family rides, dark rides, and water rides. Walter and Cordelia Knott first settled in Buena Park in 1920.