Six Flags Entertainment Corporation, formerly Six Flags Theme Parks, Inc., is an American amusement park corporation, headquartered in Arlington, Texas. It has properties in Canada, Mexico, and the United States. Six Flags owns the most theme parks and waterparks combined of any amusement-park company and has the seventh highest attendance in the world. The company operates 27 properties throughout North America, including theme parks, amusement parks, water parks, and a family entertainment center. In 2019, Six Flags properties hosted 32.8 million guests. Originally, the company was known as Six Flags, Corp., and later Six Flags, Inc. Founded in the 1960s, its name is derived from its first property, Six Flags Over Texas. The company maintains a corporate office in Midtown Manhattan, and headquarters in Arlington, Texas. On June 13, 2009, the corporation filed for Chapter 11 bankruptcy protection because of crippling debt, which it successfully exited after corporate restructuring on May 3, 2010. On November 2, 2023, Six Flags announced plans to merge with rival Cedar Fair in an $8 billion deal, with the merged company retaining the Six Flags name. Wikipedia