Six Flags has the world's largest inventory of branded roller coasters including Batman - The Ride, Superman Ultimate Escape and The Joker s Jinx. Six Flags Over Georgia features many attractions including Skull Island, Ridgeline Racer Coaster and the Crazy Bus. Six Flags is one of the world's largest regional theme park companies. Through its subsidiaries, the company owns and operates more than 25 parks in North America. Six Flags parks serve 34 of the 50 largest metropolitan areas in the United States including Atlanta, Los Angeles, Houston and Seattle. Six Flags was founded by Angus Wynne and opened in 1961 in Texas.