Dakar is the capital and largest city of Senegal. It is located on the Cap-Vert Peninsula on the Atlantic coast and is the westernmost city on the African mainland. Its position, on the western edge of Africa, is an advantageous departure point for trans-Atlantic and European trade; this fact aided its growth into a major regional port. According to December 31, 2005 official estimates, the city of Dakar proper has a population of 1,030,594, whereas the population of the Dakar metropolitan area is estimated at 2.45 million people. Dakar is a major administrative centre, home to the National Assembly of Senegal and Senegal's President's Palace. The Cape Vert peninsula was settled, no later than the 15th century, by the Lebou people, an aquacultural ethnic group related to the neighboring Wolof and Sereer. The original villages: Ouakam, Ngor, Yoff and Hann, still constitute distinctively Lebou neighborhoods of the city today.