Both are correct and in conversation people would get just about the same meaning from both. One uses the verb to go and so emphasizes the going, The other uses the verb to be and so emphasizes the experience of being in Paris. I would assume that the questioner is interested in your experience of Paris unless he she follows up with questions about transportation. "Did you take the train?" "Was it convenient?" Most people are not just about to go to Paris, so this meaning is not common.
나중에 봐.