I was very surprised to learn Canadians had not heard of Rimouski. How can you not have heard of Rimouski? There's an oceanographic institution there. Where are their priorities? On the south side of the St. Lawrence there's only two towns of note. This is the one which isn't Trois-Rivières. I drove there with RM and AS. Mercifully, RM didn't mind driving in Québec, which I didn't feel like doing [insert inter-provincial rivalry/driving skepticism here] so he ended up driving the whole way. That meant we went the (more) scenic route and had to stop periodically for him to take photos.
We pased this building and AS remarked on the 'historic fortifications'. I said it looked more like a silo. So, within 30 s, we had a bet and RM pulled a U-turn. There were private property signs everywhere, but there was also a historic plaque for the moulin (mill... not quite a silo, but definitely not a fort).
The next stop was definitely a mill:
Clearly the first building built in any town was the church:
We actually got out, approached the water and tasted it, to make sure that it was at least brackish (somewhat salty) and we could expect good conduction of electromagnetic fields.*
*Yes, it's a nerd road-tip thing to do. I know.