The front of hall 5 of the Parc des Expositions in Porte de Versailles. We stood queuing here for around 20 minutes to half an hour. The ridiculous thing was that earlier on we went on a bit of a trek trying to find where the entrance was, walked the whole entire way around the complex and found that the exit was literally a minute in the other direction to the way we originally went. D'oh! I blame French signposting...