Carowinds is a 407-acre amusement park primarily located in Charlotte, North Carolina. Owned and operated by Six Flags Entertainment Corporation, the park first opened to the public on March 31, 1973. Carowinds straddles the state line between North and South Carolina, adjacent to Interstate 77, with a portion of the park located in Fort Mill…Carowinds is a 407-acre amusement park primarily located in Charlotte, North Carolina. Owned and operated by Six Flags Entertainment Corporation, the park first opened to the public on March 31, 1973. Carowinds straddles the state line between North and South Carolina, adjacent to Interstate 77, with a portion of the park located in Fort Mill, South Carolina. The park has a sign telling guests where the state line lies. It was constructed at a cost of $70 million following a four-year planning period led by Charlotte businessman Earl Patterson Hall. Carowinds also features Carolina Harbor, a 27-acre water park that is included with park admission. Annual events include the Halloween-themed SCarowinds and the Christmas-themed WinterFest.