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After "National Treasure: Book of Secrets" lensed in five U.S. states and two European capitals, cast and crew celebrated the film's release at Gotham's Museum of Natural History on Thursday.

"You end up going to places you would never go and somebody else pays," said pic's helmer Jon Turteltaub. "The surprise for all of us is how much we loved South Dakota. We all showed up with our showbiz snobbery thinking we would be bored in South Dakota, and it was the place we would all go back."

Pic's producer Jerry Bruckheimer said a third installment of "National Treasure" could be in the cards. "If people show up to this one, we will see if there is some money to make another one," he said.