Canada has the only walled city in North America
Quebec City has a special feature that makes it unique in Canada (and the U.S., for that matter): it has walls. No, really, Quebec City is the only city north of Mexico that still has fortified walls – known as the Fortifications of Quebec. First the French and later the English built up Quebec City’s fortifications between the 17th and the 19th centuries. Quebec’s entire historic district, including the ramparts, has since been declared a World Heritage Site by UNESCO.