The French Quarter, also known as the Vieux Carré, is the oldest neighborhood in the city of New Orleans. After New Orleans (La Nouvelle-Orléans in French) was founded in 1718 by Jean-Baptiste Le Moyne de Bienville, the city developed around the Vieux Carré ("Old Square" in English), 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 Louisiana Purchase. Most of the extant historic buildings were constructed either in the late 18th century, during the city's period of Spanish rule, or were built during the first half of the 19th century, after U.S. annexation and statehood.