Metropolitan Manila , commonly known as Metro Manila, the National Capital Region (NCR) of the Philippines, is the seat of government and the most populous region of the country which is composed of Manila, the capital city of the country, Quezon City, the country's most populous city, the Municipality of Pateros, and the cities of Caloocan, Las Piñas, Makati, Malabon, Mandaluyong, Marikina, Muntinlupa, Navotas, Parañaque, Pasay, Pasig, San Juan, Taguig, and Valenzuela.