Manila is the capital and second largest city of the Philippines. It is one of the sixteen cities which, along with the municipality of Pateros, make up Metro Manila, the National Capital Region, whose overall population is around 12 million.
The city of Manila is located on the eastern shore of Manila Bay and is bordered by the cities of Navotas and Caloocan to the north; Quezon City and San Juan to the northeast; Mandaluyong to the east; Makati to the southeast, and Pasay to the south. It has a total population of 1,652,171 according to the 2010 census and is the second most populous city in the Philippines, behind Quezon City. The populace inhabit an area of only 38.55 square kilometres (14.88 sq mi), making Manila the most densely populated city in the world.
Corregidor Island, locally called Isla ng Corregidor, is an island located at the entrance of Manila Bay in southwestern part of Luzon Island in the Philippines. Due to this location, Corregidor was fortified with several coastal artillery and ammunition magazines to defend the entrance of Manila Bay and the City of Manila from attacks by enemy warships in the event of war. Located 48 kilometres (30 mi) inland, Manila has been the largest city and the most important seaport in the Philippines for centuries, from the colonial rule of Spain, Japan and the United States, to the establishment of the Republic of the Philippines in 1946.