1976–2007
2007–2012
2012–present
2012–2016
2016–present
Merger with Six Flags pending
Amusement parks: California's Great America | Canada's Wonderland | Carowinds | Cedar Point | Dorney Park & Wildwater Kingdom | Kings Dominion | Kings Island | Knott's Berry Farm | Michigan's Adventure | Valleyfair | Worlds of Fun Water parks: Former parks: |