Pago Pago is the capital of American Samoa, an unincorporated territory of the United States located in the South Pacific Ocean. The name Pago Pago is derived from the local language and translates to 'make a payment'. It is the largest city in American Samoa and is located on the main island of Tutuila. The city is known for its harbor, which is the only deep-water port in the South Pacific. Pago Pago is also home to the National Park of American Samoa, which is the only national park in the United States located south of the equator.