Hawaii Volcanoes National Park: 333,086.05 acres
Located on the southern part of the island of Hawaii, the park was authorized as part of Hawaii National Park on August 1, 1916. Renamed on September 22, 1960. Hawaii Volcanoes has been designated a Biosphere Reserve, as well as a World Heritage Site, and contains more than 131,000 acres of designated Wilderness Areas. Erupting volcanoes, rare and endangered plant and animal communities, and cultural sites are special features of the park.

Haleakala National Park: 30,183 acres
Authorized as part of Hawaii National Park on August 1, 1916, and renamed on September 13, 1960. Haleakala, on the island of Maui, has been designated a Biosphere Reserve, and contains more than 19,000 acres of designated Wilderness Areas. A variety of areas, from the summit to the ocean, protect fragile native Hawaiian ecosystems, rare and endangered species, and cultural sites.

Kaloko-Honokohau National Historical Park: 1,160.91 acres
This park, on the west coast of the island of Hawaii was authorized on November 10, 1978. This was the site of important Hawaiian settlements before the arrival of European explorers. It includes coastal areas, three large fishponds, house sites, and other archeological remnants. The park is intended to preserve the native culture of Hawaii.

Puuhonua o Honaunau National Historical Park: 420 acres
Authorized on July 26, 1955 on the west coast of the island of Hawaii, the park includes ancient house sites, royal fishponds, coconut groves, and spectacular shoreline scenery. Until 1819, vanquished Hawaiian warriors, noncombatants, and kapu breakers could escape death by reaching this sacred ground.

Puukohola Heiau National Historic Site: 86.24 acres
On the west coast of the island of Hawaii, this park was authorized on August 17, 1972 to preserve the ruins of Puukohola Heiau. This 'temple on the hill of the whale' was built by Kamehameha the Great during his rise to power.

National Park of American Samoa: 9,000 acres, water area 2,500 acres
The park was authorized on October 31, 1988, and a 50-year lease was signed on September 9, 1993. Paleotropical rainforests, pristine coral reefs, and white sand beaches on three volcanic islands in the South Pacific are home to unique animals including the flying fox fruit bat.