Foire de Paris - worth a visit for the food?
Definitely worth spending half a day (or more). Food building has wonderful speciality vendors from all over Europe. Great food booths to either buy the products or others to eat there. There is a large section devoted to wine. Of course the rest of the fair is also outstanding. Last year we went for one day and then went back the next day too. This year we plan to go for at least 2 days.