Continuity mistake: In the final fighting scene between Dracula and Van Helsing it can be seen that Dracula has all his fingers. However, later in the scene, when he asks Van Helsing for the return of his ring, one of his fingers is missing.
Continuity mistake: Towards the end of the movie, in the scene where Anna is taking the werewolf cure to Van Helsing and the vampire bride stops her on the large fallen pillar, she falls so she is in a sitting position with the cure in her left hand. She then switches it to her right. Then in the close-up shot, the cure is still in her left hand and she switches it again.
Continuity mistake: When Velkan hangs on the rope and is being pulled up he looks down and the werewolf climbs up the wooden pole and you can see scratch marks on the top of the pole. Then the second time he looks down at the werewolf you can see the top of the pole is scratch free and the werewolf makes the scratch marks again. If you have a close look at these two scenes you can see it's the same scene played twice, but with a different roaring sound from the werewolf.
Revealing mistake: When firing the cross-bow, Van Helsing runs out of arrows, but the bow's cannister is completely full of arrows. In the same shot he simply spins once and they all disappear.
Continuity mistake: When Anna and Van Helsing embrace to kiss, the hands with which they caress each other change position and even totally swap in between cuts. In one shot Van Helsing will be touching her with his right hand, the next shot with his left hand, the next shot with no hand, etc.
Revealing mistake: When Dracula pulls the silver stake from his heart, you can see it is a prop from the way the point wobbles slightly.
Revealing mistake: When Dracula is walking upside down, and he yells "Let us Begin.", you can see the wire and pulley device underneath his feet, in between the sides of a pre-cut line on the top side of the bridge.
Continuity mistake: When Anna is hanging from the top of the roof, she places her feet against the wall before jumping. At that time you can see the wall is perfect without any cracks or marks. When it cuts to her leaping off you can see a huge crack going along the wall where she has her right foot.
Continuity mistake: When Dracula and Van Helsing meet for the first time, Dracula's hand placement changes between shots. This happens twice, once when he is saying 'But like me, hunted by all others." During this, his hands move from his side to taking his gloves off. And again, when he says 'You are the great Van Helsing,' his hands move from his sides to being in the air.
Revealing mistake: At the end of the movie, when Dracula's children explode, the goop from their bodies doesn't match up with the splashes on the ground. You can see some of it hit the ground and disappear, and other places, it would hit, then the splash would occur a second or two later. It was all computer-generated, so it was just slightly mismatched. Hard to catch normally, but easy to see in slow-motion.
Factual error: When Van Helsing goes to Rome, the subtitle refers to the Vatican as "Vatican City". By the 1880's the Pope had lost all his temporal power, and his previous lands (The Papal States) were taken by the new Italy. The Vatican had no lands or authority over any of Italy or Rome. The Pope was a virtual prisoner inside the Vatican. Only with the Lateran treaty in 1929 (with Mussolini) did the Vatican gain independence as the "State of Vatican City".
Continuity mistake: Before Van Helsing looks at Dracula's children in the "eggs" by biting it off and dropping it to the ground, he removes one of his gloves. However, when he starts shooting the offspring, then fighting Dracula, that glove is back on his hand.
Continuity mistake: Near the end of the attack of the Brides, Marishka is about to make her final "charge". The wind blows the hair back from her face, showing that she is not wearing any earrings. Yet after Van Helsing kills her and she starts to disintegrate, she is wearing large triangular dangling earrings. (It's not because her jewelry disappears in her flying form - she is shown wearing bracelets and rings in *both* forms).
Continuity mistake: In the scene in the village, after the brides have attacked, Anna lands on top of Van Helsing. In one shot she is sitting with her legs under his arms, in the next shot she sits above his arms. When they roll, her legs are back under his arms.
Continuity mistake: When we first get to Carl there is a man behind him on a some sort of power generating machine. Then the man suddenly almost get electrocuted and smoke rises all around him. When it cuts to Carl walking to Van Helsing we can see the man in the background but now all the smoke is gone.
Continuity mistake: When the werewolf is down the trap you see Anna placing her foot on the edge of the hole. As the cage is being dragged up you see Anna do a backflip. However in one of the scenes you see her backflip you can see her actually standing two feet away from the edge before she does the backflip.
Continuity mistake: After the vampire has thrown the bull through the building wall we see Van Helsing turning his head around noticing Anna running. If you look behind Anna you can see something orange resembling what could be haystack of some sort. When it cuts to a closer look of Anna running you can still see it behind her. When it cuts back to Van Helsing still looking her direction it is gone.
Continuity mistake: As the first vampire charge and Van Helsing pulls up his weapon you see Anna bending down beside the well. It the cuts to a shot from above where the three vampires come flying against the camera. At that point you can see the well and Anna isn't standing anywhere near it. When it cuts to Anna shouting "Everybody inside." she is standing beside the well again.
Revealing mistake: At the ball when Carl pushes the man spitting fire so that he spits fire on Dracula, you can see Dracula grabbing him and throwing him away. Then it cuts to Van Helsing gliding down on a rope grabbing Anna. When we get to the scene where the camera view comes flying against Anna we can see, on the left, Dracula's shadow when he is throwing the man. As the previous scene where Dracula threw away the man was most likely done with CGI, they forgot to add the man's shadow in this scene. Also in the following scene you can see Dracula throwing, but this time they forgot to add the man in.
Revealing mistake: When Dracula walks up the wall (the first time we see him in color), in the overhead shot the torches wobble slightly from where the separate photography was composited in.
Revealing mistake: When Van Helsing enters the secret-society under Vatican City, in the distance you can see a giant mirror used to reflect the set to create the illusion that the room is much bigger than it really is. You can see Van Helsing and the priest's reflections at the top corner of the screen several times (Confirmed on DVD commentary).
Continuity mistake: When Velkan changes into a werewolf in front of his sister he still has tattered remains of pants on him. When he goes to Castle Frankenstein, and enters through the roof his pants are gone. When the Velkan werewolf lands on the ground and starts to change back, his pants are back on.
Other mistake: Van Helsing's ring fits his as a human, but in the climactic fight he turns to werewolf form and back and is still wearing it. He didn't have time to take it off and put it back on, so either one of his wolf fingers should be horribly, painfully cramped or the ring should have broken. No one insinuates that the ring has magical powers of any kind to prevent this.
Revealing mistake: When Velkan and the werewolf has dived off the cliff, we get a shot behind Anna where she is looking down the cliff. It cuts to a front shot of her and back behind her again and you can see it's actually the same scene played over again. You can easily see it on how her hair moves in the wind.
Factual error: On the map, Budapest is indicated to be just as large as Transylvania, or at least of the same size category. Apart from Budapest being only a city and Transylvania a pretty large county, Budapest (taking its 19th century size) is not more than 500 square kilometres while the Transylvanian region is circa 57000 square kilometres.
Factual error: In the beginning of the scene after Van Helsing kills off one of the three female vampires, there is a map behind Friar Carl depicting the whole of the Carpathian basin, which, at the time, included the Austro-Hungarian empire as well as a part of Romania. However, the whole area is labeled "Transylvania", which is only a region of Romania.
Continuity mistake: As revealed in the DVD commentary, the character Anna's hair changes somewhat in some scenes. Noticeable is the very slight changes that occur before she finds out her brother is a werewolf. An original mistake was already corrected, but I assure you it's there. It's just hard to see.
Continuity mistake: As the cage is being dragged up along the trees, right before Velkan jumps off, you can see ropes and equipment attached to the tree on the right. It cuts to Velkan jumping off the cage and the cage continues being dragged up along the tree. When the cage stops you can see the same ropes and equipment to the right as previously seen.