Last time when we were in Paris, the food at the restaurants was terrible. The big mistake we made is not researching good restaurants. We learned our lesson this time and did some research in advance by using Tripadvisor and a huge amount of blog posts. A nice feature of Tripadvisor is that you can book a table in advance for a large number of restaurants in Paris. Although this was not always necessary, we wanted to be on the safe side.
We already visited Paris two times, and a few things we visited on both times while others we only discovered the second time we were there. I will start by the must-do things followed by things that are nice to do but not a must. If you are in Paris for a longer period of time, of course you can do more than when you are visiting for the weekend.