The St. Lawrence River, which flows through Quebec City and Montreal and joins the Great Lakes of Canada and the United States, is a particularly long river, stretching 1,197 km. Its estuary is the largest in the world, with a width of 48 km and a length of 370 km. The explorer Jacques Cartier, who discovered and named Canada, arrived on this river on the feast day of Lorenzo of Rome. He decided to name it the St. Lawrence. The river flows through Quebec City and is a major commercial artery.
