Go to Notre Dame (it is the old church, before the bridge) and attend Mass. Even if you are not a believer, it is a good experience.
There is a farmers' market in Mondays, and a local producers one (very good artisanal cheese, hams) in Thursdays...
Four times -and counting.
Actually I came back from the Camino some weeks ago, and I noticed that I almost imperceptibly have started to think and consider options for my next :)
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