Six Flags Great America was created in 1976.
Ninja - Six Flags St. Louis - was created in 1989.
Six Flags St. Louis was created in 1971.
1961
in 1975.
Six Flags Mall was created in 1970.
Six Flags America was created in 1981.
Six Flags New Orleans was created in 2000.
Six Flags Wild Safari was created in 1974.
Six Flags Fiesta Texas was created in 1992.
Viper - Six Flags Astroworld - was created in 1985.
Six Flags Over Georgia was created in 1967.
Six Flags Magic Mountain was created in 1971.
Medusa - Six Flags México - was created in 2000.
Six Flags AstroWorld was created in 1968.
Great Chase - Six Flags America - was created in 1999.
Medusa - Six Flags Discovery Kingdom - was created in 2000.