Connect with your spiritual side and meet other worshippers at Church of Saint-Eusebe. Quietly reflect outside for a while or ask if you are allowed to join the next service.
You'll have sightseeing choices galore when spending time in Auxerre. Church of Saint-Eusebe is an ideal place to kick off here, but there are plenty of other worthy places to check out. Stade de l'Abbe-Deschamps, Auxerre Cathedral, and Auxerre Clock Tower are not far from the house of prayer and and will cap off your day nicely.