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Destinations

Oʻahu

Honouliuli National Historic Site

Hidden in a gulch in central Oʻahu, Honouliuli was the largest and longest-used World War II incarceration camp in Hawaiʻi. From 1943 to 1946, it held Japanese American civilians and others the government considered a threat, as well as thousands of prisoners of war. Those held here called it Jigoku-dani, “Hell Valley.” In 2026, eighty years after it closed, it opened to the public for the first time.

Island

Oʻahu (near Waipahu)

Access

Guided tours only

Tour Length

About 3 hours

Cost

Free

Honouliuli internment and POW camp (historic photo)

How to Visit

There are no public roads into the site, so you can only visit on a guided tour. Tours begin at Hawaiʻi’s Plantation Village in Waipahu, where you check in, and then ride a free shuttle into the gulch. On site, rangers and volunteers lead you along historic trails and past the remains of the camp.

2026 is a pilot year, with a limited number of tour dates and small groups. Reservations are first come, first served, and they fill quickly. Check the park’s website for current dates.

Know Before You Go
  • There are no facilities on site: no visitor center, no shade, and no places to sit.
  • Bring water, a hat, sunscreen, and closed-toe shoes.
  • Minors must be with an adult at all times.

Other Ways to Learn

Hawaiʻi’s Plantation Village

A Honouliuli exhibit with a model of the camp and a reconstructed guard tower.

Pearl Harbor National Memorial

The park’s passport stamp is available at the Pearl Harbor visitor center information desk.

Honouliuli asks a hard question: what happens to freedom when fear takes over?

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