1) b. The twelve-sided Walbridge Barn is unique in the world.
2) c. The Canada-U.S. border runs right through the Haskell Opera House. The stage is located on the Canadian side of the building, while most of the seats are in the U.S. The door to the opera house is in the United States, but Canadians don't need to go through customs!
3) d. Saint-Armand's Guthrie covered bridge is only 14.9 metres (45 feet), making it the province's smallest covered bridge. Built in 1845, it is also the oldest.
4) d. Eccles Hill, the site of the infamous Fenian Raid of 1870.