Audio problem: While investigating the Statue of Liberty, Ben says, "Laboulaye had to leave a clue somewhere". However, when he says this, his mouth doesn't move.

Revealing: In the scenes where Riley is using his computer to look up information on the "SearchInfo" site, the screenshot used is of Wikipedia. (You can even see the "About Wikipedia" link on the left).

Revealing: In the scene where the barrels of beer are rolling off the truck, you can notice small squibs going off to make the barrels look like they have been shot.

Continuity: Mitch Wilkinson jumps to a hanging ladder in the hidden chamber at Mount Rushmore, the first shot shows him hanging off the ladder with a pistol holster through his belt loops. The shot cuts away and when it returns there is no pistol holster where there was seconds earlier.

Factual error: At the beginning of the film, John Wilkes Booth is seen departing the tavern and arriving at Ford's Theater by horse. The tavern is actually right next to the theater.

Visible crew/equipment: When water is breaking through the wall you can see that at times the water is going through preformed squares.

Revealing: When Nicolas Cage meets the president in the hangar and the president hands him a newspaper containing an article clearing Cage's great-great-grandfather's name, the text of the article in the center top of the newspaper in that scene contains the same body text as the article to the right that's titled "Family Saved."

Plot hole: The model of the Statue of Liberty was built in 1870. The Resolute was only retired in 1879. How could the makers of the statue know that the Indian markings would be hidden in desks made of wood from the Resolute 9-10 years in advance? Or were the markings only put there in 1880? That would mean that the diary entry was made 15 years in advance of the clue being put on the Laboulaye Lady.

Factual error: In the movie, the bad guy steals one of the good guy's cell phones and "clones" it so he can listen in on their conversations. Although cell phone "cloning" is possible in real life, it does not work this way. What would happen would be that whichever cell phone the tower finds first would be the one that would ring, so the bad guy could pick up the phone and make the connection (although his voice would most likely give him away). It would not, however, let him eavesdrop on a connection already made between the other cell phones.

Visible crew/equipment: In the last scene when Riley Poole is walking to his home and spots his Ferrari that was repossessed, when the camera tracking shop stops, in the reflection on the side of the car you can see the camera and the camera track reflected in the door of the Ferrari.

Continuity: During the car chase in London, when you see from inside the car, you can't see any of the glass at the bottom on the rear window, but when you see the car from the outside there is a significant portion of the glass left.

Continuity: During the scene where they encounter the beer truck in the alley, they are driving towards it, but in the next shot the car is the other way and are driving away from it.

Visible crew/equipment: At the last scene when Riley Poole gets in his Ferrari, you can see the camera man in the reflection by the head rest of the seat. You can see a black dot moving. That's the camera man's head.

Continuity: During the car chase in London, the Range Rover with Mitch Wilkinson crashes into the rear end of the Fuller beer truck, damaging the left front bumper parts and headlights. Later in the chase, no damage is seen.

Factual error: When inside the Oval Office, we look out through the windows to the left of the desk (towards the East) and see bushes and trees right outside the windows. But on that side of the oval office there is a covered patio with columns, and it is quite dark.

Factual error: The reenactment of Lincoln's murder is not historically correct. Booth shot the president in the back of the head. Lincoln slumped over in his rocking chair, unconscious. One of Lincoln's guests - Major Rathbone - jumped from his seat and tried to prevent Booth from escaping, but Booth stabbed the Major violently in the arm with a knife. Rathbone quickly recovered and tried to grab Booth as he was preparing to jump from the sill of the box. Booth again stabbed at Rathbone, and then attempted to vault over the rail and down to the stage. His foot was caught on the Treasury flag, and Booth came down full-face to the audience thus, breaking his leg.

Plot hole: In April, any lake in South Dakota is freezing cold. And it goes without saying that you don't have to be in cold water very long for hypothermia to take effect; even a few minutes is enough. So why don't our heroes succumb to any kind of hypothermia when the gold chamber floods with icy lake water?

Continuity: Many beer kegs fall from the truck, yet the number remaining on the truck barely goes down from shot to shot.