Paramount Parks was the operator of Paramount's Kings Island, Paramount's Kings Dominion, Paramount's Great America, Paramount's Carowinds, and Paramount Canada's Wonderland, which annually attracted about 13 million patrons. National Amusements-owned Viacom assumed control of the company as part of its acquisition of Paramount Pictures in 1994. On June 30, 2006, Cedar Fair acquired the company, and the deal included a ten-year license to use the Paramount Parks name and theme, and a four-year license to use Nickelodeon names and themes.