"The bride fell upon entering the city hall."
Translation:La mariée est tombée en entrant dans la mairie.
Ok. One goes to city hall to sign the marriage license (and in some cases perform the ceremony); one goes to a church to perform the ceremony (unless done at city hall for a civil wedding); and one goes to the town hall (community hall?) for the celebration. In this case, I assume it is the celebration we are talking about. In Europe, city hall and the town hall can be located in the same building, which in many cases happens to be across the street from the main church.