If you're up this far north you have to stop in Canal Park Brewing Company. It's a big space right on the shore of Lake Superior with an outrageous outdoor patio and some awesome brew. The menu isn't bad either with typical bar fare along with their own touches like Pickled Herring and Beer Can Chicken.
I went for their 40 Acre Saison right away, served in a tulip. It's light and refreshing like a Farmhouse Ale should be, but watch the kick- it's 7.6% abv. I also went for the Nut Hatchet, which is a World Beer Cup Winner. It had aroma of roasted nuts and 7 grain bread and a smooth taste of brown sugar with toffee- I'd have liked it with a Black & Bleu Cheeseburger.
The bar crowd was pretty lively and I actually started up a conversation about sports with a local Minnesotan and a guy from LA. If I visit again, I'll be sure to take the tour. This is another place to mark on your list to visit in Duluth.