Continuity mistake: When Harrison Ford is on the rooftop and the suitcase accidentally opens, the Statue of Liberty goes flying off the rooftop and on to the ground, several stories down. In the next shot, the little statue is perched at the edge of the rooftop. Also, the clothes that fly away magically reappear next to the suitcase a shot later.
Continuity mistake: Midway through his shave, Dr. Walker is interrupted by the bell of his hotel room. The blobs of shaving cream on his chest change from the shot in the hotel room to the next shot in the hallway.
Continuity mistake: When Dr. and Mrs. Walker arrive at their hotel room in Paris, Dr. Walker throws his jacket on the very corner of the bed. Throughout the next several scenes, the jacket position changes.
Continuity mistake: When Michelle tries to reach for the statue, in the close-up there's a dim light shining and a small souvenir license plate next to it. Also, there's a white bag to the left of the shoe. In the wide angle, the light is brighter, the license plate is gone, and the white bag is now to the right of the shoe.