Revealing mistake: Gratuitous car explosions are nothing new in action films ... but this time the ambulance explodes in mid-air before even hitting anything. (00:32:22)
Revealing mistake: Alfred's sword leaves a large dent when it gets stuck in the wood. A few shots later, the sword moves, the dent dissapears and the wood actually wobbles as if made of rubber.
Revealing mistake: In the Vatican, when the security cage falls on the policeman, he stays still for two shots because he has been replaced by a dummy.
Revealing mistake: At Da Vinci's castle, hit Pause when Eddie steals the crystal. It is actually a little frog statue. The prop was apparently unavailable during the shooting of this scene and they took an object of the same color.
Revealing mistake: When Tony and Eddie jump from the Mayflower's building, the ground on which they fall bounces.
Revealing mistake: When Bruce is making a phone call, the glass of the phone booth is normal. Just before he swings the blond thug around into it, a pane is shown that is obviously fake - it is discoloured and not smooth. (00:47:00)
Revealing mistake: When Hudson is researching how to steal Da Vinci's book he comes to a staircase. Along the walls are bookcases - if you look properly you can see these are flat, with the book spines just painted on.
