Quebec City is the only walled city in North America. I could have spent a week just bouncing from cafe to cafe eating crepes but I was there for an academic conference. Parliament and the citadel are worth a visit. Both the fortifications and the Terrasse Dufferin are lovely walks in good weather. The city is built on a hill so bring some good walking shoes and don’t miss the farmers market. If you have time, take a bicycle ride along the river path.