9 Things You Might Not Know About National Treasure

Released in 2004 to mixed critical reviews but a positive audience response, director Jon Turteltaub’s National Treasure has grown into a perfect rainy-day film. Stumble upon it on a streaming service or a cable channel and the fable about historian-slash-codebreaker Benjamin Franklin Gates (Nicolas Cage) excavating the truth about a reputed treasure map on the back of the Declaration of Independence will suck you in. Check out some facts about the movie’s development, its approach to historical accuracy, and why we haven't seen a third film.

1. THE SCRIPT NEEDED NINE WRITERS TO CRACK THE CODE.

Originally planned for a summer 2000 release, National Treasure—based on a concept by Disney marketing head Oren Aviv and DreamWorks television executive Charles Segars—had a Byzantine plot that kept it in a prolonged pre-production period. Nine writers were hired between 1999 and 2003 in an attempt to streamline the story, which sees code-breaker Benjamin Franklin Gates (Cage) pursuing the stash of riches squirreled away by Benjamin Franklin and his Freemason cohorts. Filming finally began in summer 2003 when Marianne and Cormac Wibberley got the script finalized. Turteltaub, who spent three years in development before finally starting production, told Variety that “getting Cage was worth .”

2. BENJAMIN FRANKLIN REALLY WAS A FREEMASON.

Fact and fiction blur considerably in National Treasure, which uses history as a jumping-off point for some major jumps in logic. While it’s not likely the Declaration of Independence has a secret treasure map written on it, Franklin and other Founding Fathers were actually Freemasons. Of the 55 men who signed the document, nine or more belonged to the society.

3. THE CREW USED A BRICK-FOR-BRICK REPLICA OF INDEPENDENCE HALL.

It can be tricky to secure permission to film on government property, which is why producers of National Treasure probably considered themselves fortunate when they discovered that Walter Knott of Knott’s Berry Farm fame had built a perfect replica of Independence Hall on his land in Buena Park, California back in the 1960s. The production used it for a scene requiring Cage to run on the Hall's roof, a stunt that was not likely to have been approved by caretakers of the real thing.

4. THAT $100 BILL REALLY DID HAVE A PRECISE TIME ON THE CLOCK.

One of Cage’s cryptic clues in the film is reading a time of 2:22 on the clock depicted on the image of Independence Hall on the $100 bill. Bills in circulation at that time really did have an illustration that pointed to that exact hour and minute, although it was changed to 10:30 for the 2009 redesign. There’s no given reason for why those times were picked by the Treasury Department, leaving conspiracy theorists plenty to chew on.

5. IT LEFT SOME PEOPLE WONDERING IF THERE REALLY IS A SECRET MAP.

Speaking with The Washington Post in 2012, guards and escorts for the National Archives reported that the National Treasure films have led visitors to ask questions that could only have been motivated by seeing the series. One common query: whether or not there really is a secret map on the back of the Declaration of Independence. “I call it ‘that’ movie,” guard Robert Pringle told the paper. “We get a lot of questions about the filming.”

6. THE DIRECTOR WENT TO HIGH SCHOOL WITH NICOLAS CAGE.

Both Cage and director Jon Turteltaub attended Beverly Hills High School in the late 1970s and shared a drama class together. While promoting a later film collaboration, The Sorcerer’s Apprentice, Cage revealed that Turteltaub had actually beat him out for the lead in a stage production of Our Town. Cage was relegated to two lines of dialogue in a bit part.

7. CAGE LIKED DOING KARAOKE DURING FILMING.

On a press tour for the film, Cage told reporters that he and co-star Diane Kruger bonded by going out at night and singing karaoke. “We’d go and karaoke from time to time and sort of blow it out and be completely ridiculous, which helped, I think,” he said. “I think it was some Rage Against the Machine, AC/DC and some Sex Pistols.”

8. THE SEQUEL BOOSTED ATTENDANCE AT THE NATIONAL ARCHIVES.

Popular films often have the residual effect of drawing interest to the real-life locations or subject matter incorporated into their plots. Mackinac Island, site of the 1982 romance Somewhere in Time, has become a perennial tourist spot. The same influence was true of National Treasure and its 2007 sequel, both of which apparently contributed to an uptick in attendance at the National Archives in Washington, D.C.

9. NATIONAL TREASURE 3 COULD STILL HAPPEN.

It’s been over a decade since National Treasure: Book of Secrets hit theaters, but Cage is still optimistic fans of the series could see another installment. Speaking to Entertainment Weekly in 2016, the actor said a third film was in development, with the convoluted writing process slowing things down.

“I do know that those scripts are very difficult to write, because there has to be some credibility in terms of the facts and fact-checking, because it was relying on historical events,” Cage said. “And then you have to make it entertaining. I know that it’s been a challenge to get the script where it needs to be. That’s as much as I’ve heard. But they’re still working on it.”