High Quality Content by WIKIPEDIA articles! Kings Island is a 364-acre (1.47 km2) amusement park located 24 miles (39 km) northeast of Cincinnati in Mason, Ohio. Opened in 1972 by Taft Broadcasting Company and now owned by Cedar Fair Entertainment Company, Kings Island is the most visited seasonal amusement park in the U.S. with an estimated 3.1 million visitors in 2010 (second overall in North America behind sister park Canada`s Wonderland).