Quebec City (French : Ville de Québec, or just Québec) is the capital of the Canadian province of Quebec. It sits at a commanding position on cliffs overlooking the St. Lawrence Seaway. Quebec City's Old Town is a UNESCO World Heritage Site and one of only three cities in North America (the others being Campeche, Mexico and San Juan, Puerto Rico) with its original city walls. Quebec is a city of about 700,000 residents.