It is one of the first TV appearances of the Notre Dame Cathedral in Paris after its fire in 2019.
While their characters are not in the episode, Nolan Gould and Ariel Winter are extras in the Notre Dame scene.
The restaurant where the family meets at the end is a real restaurant in Paris, "L'Oiseau Blanc." It is located at The Peninsula hotel, the same one where Guy is staying.
The episode establishes that Claire spent a semester abroad in college 30 years ago, which would place it in February 1990. Julie Bowen spent her junior year of college abroad in Florence (Italy) around the same time.
The bench where Phil and Guy sit on is located on Place Jacques Bainville.