The Republic of the Philippines is an archipelago consisting of more than 7,000 islands and islets lying about 800 km off the southeast coast of Asia and stretching 1,850 km from north to south. It is bounded by the Philippine Sea to the east, the Celebes Sea to the south, and the West Philippine Sea to the west and north. Manila is the biggest city and the national capital. It is located in Luzon, the largest island. Only about two-fifths of the islands and islets have names, and only 350 are larger than one square mile.