To keep out the Americans.
The only walled city in Canada is.......Quebec City, PQ.
Quebec City
Old Quebec City, Quebec is the only walled-city in North America that is left standing outside of Mexico. Quebec City is the capital of Quebec and the second-largest city in the province.
Quebec City
Quebec City (Canada).
Quebec
Quebec city
Quebec
Quebec City is the capital of Quebec. Quebec's Old Town (Vieux-Québec) is the only North American fortified city north of Mexico whose walls still exist.
Quebec City qualifies as such.
The Canadian capital city that is the only walled city in North America outside of Mexico is Quebec City. Its fortified walls, known as the Ramparts of Quebec City, are a UNESCO World Heritage site and a major tourist attraction.
the only walled city in north America is southern whoodall, Carolina