Factual error: In Sintra, when Depp and the girl go to Fargas' house in the morning, they ride the motorbike and turn left. However, from Hotel Central to this house you must turn right, it's the road that climbs to the manors, the other way you'll get to Central Village.
Factual error: Whenever one or more of the mutated, super venomous snakes attack someone, you can hear a rattling sound because they evolved from rattle snakes. However, it frequently shows the tips of the snakes tails, and they are completely bare. How can they constantly make that noise if they don't have rattles?
Factual error: The scene where Michael frantically arrives at the FBI headquarters, he drives the Contour up over the movable vehicle barrier. The movable vehicle barriers that are in place at the FBI headquarters, both pre and post 9/11, are steel ramp type barriers angled upward toward the entering car and lowered when needed. The ramps are about as high as the top of the Contour's hood and the Contour would have just gotten wedged under the opening of the barrier ramp. And there wasn't enough of a "ramp" in front of the barrier to floor it and jump the car over the barrier (ala Dukes Of Hazzard), hence the barrier system would really work.
Factual error: The film takes place around 1830, but you can see a character using a Colt Navy 1851, which was made 21 years later actually.
Factual error: In a scene in a bar the music playing is Blur's Song 2, which wasn't released until 1998 and a Kula Shaker song which wasn't released until 1996, by which time Nick Leeson was firmly in prison.
Factual error: While directors certainly take their liberties with the military, is it reasonable to think that the security would be so lax at a government NBC (nuclear, biological, chemical) research laboratory that you could just kill two guards and walk in and open a cabinet and "hey, there's that super-secret, super-volatile weapon we've been looking for." The military takes their security far more seriously than Hollywood interprets it.
Factual error: The Crane mansion is supposed to be set above the village of Concord as listed in the ledgers, however, Nell answers an ad directing her to the Berkshires which are nowhere near Concord.
Factual error: Grizzly bears are not present as far East as Maine and therefore would not have been anywhere near Lake Placid.
Factual error: When Weigand and Bergman are meeting for the first time in the Seelbach Hotel, Bergman asks Weigand if he's always lived in Louisville. The shot shows some small buildings on the outskirts of downtown Louisville, implying that what is being shown is downtown Louisville. In actuality, the main business district of downtown is on the other side of the hotel.
Factual error: When the bloke's head gets cut off in the beginning by the circular saw blade being thrown, surely there would be more blood, like when his mom got killed under the bed?
Factual error: It is not possible that little girl (Kyra) would just be buried without investigation; every non-natural death (especially from young person) requires autopsy, it's routine. During autopsy, they would have seen that she was poisoned and an investigation would have started. Police would go around asking questions like who was feeding Kyra most of the times. I'm not saying that they would discover her mother as the murderer so easy, but she wouldn't just be buried in 2 days like her death was normal and usual.
Factual error: The two main characters attempt to cross the bridge of the Petronas Towers hanging from wires holding lights. The view that this shows is wrong. KL Tower is shown in the background, but the bridge cannot be seen from KL Tower. Looking between the Petronas towers from any angle, apart from really high up, above the bridge height, you cannot see KL Tower. (01:30:10)
Factual error: The story takes place in the Pacific Northwest (Vancouver) in November and December. Washington may be known as the "Evergreen State", but there are still numerous deciduous trees - and deciduous trees have leaves that change color in Autumn (yellow, orange, red) and then shed (fall off), not stay green through December or into the new year.
Factual error: At the very end of the movie, Ichabod addresses to Young Masbath saying the final line "You'll son find your bearings young Masbath. The Bronx is up, the Battery is down and home is this way." However the Bronx was instituted only in 1898, a century later.
Suggested correction: 1. The Bronx was established in 1639, along the Bronx river by Dutch settlers, they started using the name Bronx. It doesn't have to be part of New York City for Ichabod to mention the location of the Bronx. There was already 2 bridges to it from Manhattan island even. 2. He could be simply referring to the Bronx river.
Factual error: Near the start, the letter received from Brazil has a stamp with Brazil written with a Z, but stamps spell it Brasil, with an S. (00:08:35)