The shot of the harbor at "Portsmouth, England" is actually of the Port of Dover (over 100 miles to the East).
The license plate on the French taxi parked outside of the cathedral in Strasbourg reads 2538 KB 75. This is not a license plate for Strasbourg since 75 is the department code for Paris. The department code for Strasbourg is 67. Since Hank and Laila flew directly from Montreal to Strasbourg the taxi should have been from Strasbourg, meaning the last two digits on the license plate would be 67.
White Vincent's narration at the beginning is heard as "Six is the number of harmony, the balance between spirit and flesh. We must follow the path to life even if the road ends in death." but the closed-captioning reads as "6 is the number of evil, of goodness decaying, but your foe, like the devil, is sometimes the only way."
The interior of what is supposed to be Princeton Public Library, with it's traditional dark Gothic ivy-league atmosphere, looks more like the university library. The public library in Princeton is a newer, more modern building, very bright inside with light-colored decor and a contemporary design.