Carowinds is a 407-acre (165 ha) amusement park located in Charlotte, North Carolina. Owned and operated by Cedar Fair, the park 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. 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 (11 ha) water park that is included with park admission. Annual events include the Halloween-themed SCarowinds and the Christmas-themed WinterFest.