Well, if you're sightseeing, then the first place in Québec city would be the Notre-Dame basilica, where Pierre and Louise married. The marriage record for them is an original (at least the one in Drouin institute database), and bears signatures at the bottom. Louise Lemire couldn't sign, her husband could and did, on left at bottom. Cousin E. Martin has provided you the link at FamilySearch.
Then it's on to Trois-Rivières, they had 12 kids, all baptized there. One of them gives the precision that the couple were living on Pointe-aux-Sables in the parish of Trois-Rivières, one says Crece (Crécy seigneurie) which was actually across the river in what is now Nicolet, nothing else gives more data on residence other than Trois-Rivières.