Factual error: If you take the train from Paris to Cannes you don't pass the Eiffel tower.
Great sites
Mistakes
When Meg Ryan and Kevin Kline are having breakfast in the train, the label on the water bottle changes position between shots. See more...
French Kiss mistakes
Continuity: In the restaurant at Cannes, Meg Ryan stumbles backward over a dessert cart and lands with her face clearly on the floor. After a cutaway to the diners' reacting to the crash, Meg's face is squarely in a chocolate cake. Maybe she just became hungry after the accident.
Continuity: Kevin Kline is walking through a vineyard. His shoes change from boots to loafers in the same scene.