Continuity mistake: When Dr. Seward and Van Helsing run into Lucy's bedroom, in the first shot, she is lying sprawled on her bed with her head resting against the pillows at the top of the mattress. In the next shot, she is lying in the middle of the bed, about a meter away from the pillows, with her legs going over the edge of the bed. (00:59:10)
Continuity mistake: When Van Helsing hypnotizes Mina, the candle he is holding changes throughout the scene: In the shots facing Van Helsing, long pieces of wax are sticking up from the top of the candle, while in the shots facing Mina, they're gone. (01:43:40)
Continuity mistake: When Vlad heads out into battle, he leaves through the chapel doors, which open onto a view of the sky at sunset and his army assembled outside the door. After the battle, he re-enters the chapel through the same doors, which now open into a much smaller space, terminating in a giant stone wall. (00:01:35 - 00:03:25)
Continuity mistake: When Vlad finds Elisabeta dead, the suicide letter lying on her chest keeps changing position between shots: In some shots, the letter the letter is lying almost perpendicular to her body, while in other shots it is parallel. (00:03:15)
Continuity mistake: Before the wreath of garlic falls down on Lucy's bedside table, it can be seen hanging on the lamp, but in the previous shot, as well as earlier in the scene, there was no garlic on the lamp. When Lucy grabs the vase from the bedside table a couple of shots later, the garlic that fell down on the table has mysteriously disappeared. (01:09:35)
Continuity mistake: When Keanu Reeves is being seduced by Dracula's brides, Monica Bellucci rips open his shirt, but in the previous shots, his shirt is already open. (00:33:00)
Continuity mistake: When Lucy enters the crypt, the candles on her left side ignite twice, once in the wide shot where she walks down the stairs and once in the following close-up of the candles. (01:22:40)
Continuity mistake: When Mina and Jonathan are dining with Van Helsing, the shape of the roast beef sitting on the table keeps changing throughout the scene. (01:27:50)
Factual error: At the beginning of the movie, it was stated that Constantinople was captured by the Turks in 1462. The Turks actually captured it in 1453. (00:00:35)
Revealing mistake: When Harker is in the train, the outside shot shows a blatant model train, with empty carriages, plus no people and no curtains, as opposed to the inside shots. (00:08:20)
Continuity mistake: When Arthur sits by Lucy's bed while watching over her, as Dracula appears outside the window, there's a quick shot of the bedroom from outside, and Arthur is nowhere to be seen. In the next shot inside the room, he sitting by the bed again. (01:16:15)
Continuity mistake: When Lucy sits down with Mina when Mina is typing, the folds in the curtain on the left change after they open the book. (00:19:10)
Continuity mistake: When Mina receives the letter after Jonathan escapes, she's holding it in her hands as she begins to climb the stairs, but in the next shot, her hands are empty, best seen when Van Helsing holds her hands. (01:10:00)
Suggested correction: Mina is in two different sets. The first she is in front of a gate. Of course, she has plenty of time to put the letters away.
I have checked the scene and you are absolutely right - Mina is indeed standing at the gate in the first shot, which gives her enough time to put the letters away before walking up the stairs to see Lucy in the second shot. Sorry, my bad.
Continuity mistake: When Mina and Jonathan are dining with Van Helsing, in some shots, Mina's drinking glass is full, but in two shots facing Van Helsing, the glass can be seen in the lower right hand corner, and it is empty. (01:27:50)
Continuity mistake: When Jonathan is shaving, in the first shot, the mirror he is using is quite small and has a thin wooden frame. When Dracula grabs his shoulder, the mirror is much bigger and has a thicker frame. In the next shot, where Jonathan abruptly turns around, the smaller mirror is back. (00:26:10)
Continuity mistake: On the carriage ride to Dracula's castle, Jonathan looks out the window and sees the wheels of the carriage. In the next shot, the wheels are covered by a sheet of fabric. (00:11:40)
Factual error: When Lucy walks through the garden maze at night, her skirt blows up and you can see that she is wearing red modern underwear underneath. This can also be glimpsed in the scene where Dracula first enters her bedroom. Women of the Victorian era wore long loose drawers which extended below the knee. (00:41:40 - 00:58:30)
Revealing mistake: When they are in the crypt to kill Lucy, they open the stone lid and look down. Clearly you can see glass on top of the inner coffin, yet later when Lucy goes in the coffin there is no glass. (01:24:55 - 01:27:05)
Continuity mistake: When Jonathan looks at Mina's picture aboard the train, and when Dracula sees her picture in his castle, her face is turned to one side. When Van Helsing hypnotizes her, there is a visual of the photo against a burning backdrop, and the picture is reversed, with Mina's face turned to the opposite side. (00:09:32 - 01:43:35)
Continuity mistake: At Lucy's dinner party, as Lucy is sitting on the couch with Jack Seward, Quincey Morris is holding his hat in his hands. When Lucy gets up from the couch to greet Arthur Holmwood, he is still holding it, but when the scene cuts back to Jack and Quincey a few seconds later, Jack gets a funny look on his face and then magically pulls Quincey's crumpled hat out from under his butt. (00:22:25)