Nature lovers eager to explore the United States’ expansive national parks might find themselves surprised to learn that one particular location necessitates a passport for entry.
Situated approximately 2,600 miles southwest of Hawaii, the National Park of American Samoa stands as one of the most isolated parks in the U.S. network.
Visitors can reach this remote destination by flying into Pago Pago International Airport on the island of Tutuila. From there, connecting flights can take travelers to the islands of Ta’ū and Ofu, as the park extends over these three islands.
The U.S. Department of the Interior advises that visitors must present a valid U.S. passport or a certified birth certificate to prove American nationality, aligning with the limited travel options available.
Preparation is key when embarking on this adventure, as the park is known for its tropical, humid climate year-round, with downpours common during the wet season from October to May.

Islands to explore
National Park Service officials share details on opportunities to explore each island in the park.
- Tutuila: Discover scenic trails like the Mount ‘Alava Trail, coastal beauty along the Le’ala Shoreline, and opportunities to experience Samoan culture in the villages.

The park offers incredible hikes through lush rainforests and to stunning viewpoints, though some trails can be steep and muddy, according to the National Park Service.
Along with this comes over 4,000 acres of underwater landscape, offering various wildlife and environments to explore, including diving and snorkeling.
Thankfully, the park is open year-round and there are no entrance fees to visit.
It is important to come prepared for the park’s varied weather and terrain, as park officials encourage visitors to plan their travel.