The French Quarter, also known as the Vieux Carré, is the oldest neighborhood in the city of New Orleans. After New Orleans was founded in 1718 by Jean-Baptiste Le Moyne de Bienville, the city developed around the Vieux Carré, a central square. The district is more commonly called the French Quarter today, or simply "The Quarter", related to changes in the city with American immigration after the 1803 Louisiana Purchase.