Rouen (; ) is a city on the River Seine in the north of France. It is the capital of the region of Normandy. One of the largest and most prosperous cities of medieval Europe, it was the seat of the Exchequer of Normandy in the Middle Ages. It was one of the capitals of the Anglo-Norman dynasties, which ruled both England and large parts of modern France from the 11th to the 15th centuries. It was here that Joan of Arc was executed in 1431. People from Rouen are called Rouennais.