AstroWorld 1968-1974. Bought by 6FLAGS. Went under that name and AstroWorld till 2005 when 6FLAGS for financial reasons razed the whole park. (just to gain money for OTHER debts)
A section of AstroWorld was named 'Country Fair' and existed between 1972 and 1981. It had it's own Carousel. (seperate from the main Six Flags park area)