<P> LeRoy collaborated with Hardwicke Industries , who previously built safari parks in Canada and Europe . Together , they set out to open the seven parks in stages over a 5 - year period . After a 4,500 invitation - only guest opening on June 30 , 1974 , the Great Adventure entertainment complex opened to the general public on July 1 , 1974 , at a price tag of $10 million . At the time of the opening , only the Enchanted Forest and Safari parks were operational , and despite plans for a seven - park complex , only those three ( if you count Hurricane Harbor ) parks were ever realized , with elements from five of the other planned parks being used to create the Enchanted Forest . </P>
<P> LeRoy collaborated with Hardwicke Industries , who previously built safari parks in Canada and Europe . Together , they set out to open the seven parks in stages over a 5 - year period . After a 4,500 invitation - only guest opening on June 30 , 1974 , the Great Adventure entertainment complex opened to the general public on July 1 , 1974 , at a price tag of $10 million . At the time of the opening , only the Enchanted Forest and Safari parks were operational , and despite plans for a seven - park complex , only those three ( if you count Hurricane Harbor ) parks were ever realized , with elements from five of the other planned parks being used to create the Enchanted Forest . </P>
when did six flags great adventure first open
when did six flags great adventure first open
June 30 , 1974
June 30 , 1974