Final Answer:
The capital of Quebec, lying on the St. Lawrence River at its meeting point with the St. Charles River, founded by Champlain, and featuring an old city with fortified walls and Château Frontenac, is Quebec City.
Step-by-step explanation:
Quebec City, a historic and culturally rich metropolis, serves as the capital of the province of Quebec, Canada. Situated on the St. Lawrence River, where it meets the St. Charles River, Quebec City was founded by Samuel de Champlain in 1608. The city's Old Town is a UNESCO World Heritage site, characterized by its well-preserved fortified walls, cobblestone streets, and iconic landmarks such as the Château Frontenac, a grand hotel that dominates the city's skyline. These elements contribute to the city's unique charm and make it a popular destination for tourists seeking a glimpse into Canada's colonial history.