Rouen is a city on the River Seine in the north of France. It is the capital of the region of Upper Normandy and the historic capital city 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.The population of the metropolitan area (in French: agglomération) at the 1999 census was 518,316, and 532,559 at the 2007 estimate. The city proper had an estimated population of 110,276 in 2007.AdministrationHaute-Normandie (Upper Normandy) région, as well as a commune and the préfecture (capital) of the Seine-Maritime département.Rouen and 70 suburban communes of the metropolitan area form the Agglomeration community of Rouen-Elbeuf-Austreberthe (CREA), with 494,382 inhabitants at the 2010 census. In descending order of population, the largest of these suburbs are Sotteville-lès-Rouen, Saint-Étienne-du-Rouvray, Le Grand-Quevilly, Le Petit-Quevilly, and Mont-Saint-Aignan, each with a population exceeding 20,000.