Honouliuli National Historic Site

Honouliuli National Historic Site preserves the location of a World War II-era internment and detainee complex on the island of Oʻahu, Hawaii. It commemorates the incarceration of Japanese Americans, Okinawans and other detainees and prisoners during the war.

On site visitors and researchers find preserved landscape features and interpretive materials that document the camp’s layout and use; public access is managed to protect fragile remains and archaeological resources. The site emphasizes education about wartime civil liberties and the experiences of internees.

The site was established by the U.S. Army in 1943 and was used during World War II as an internment and POW facility; detainees were held there through the end of the war era. The location and surviving features were later identified and protected for their historic significance.

Honouliuli sits on the western side of central Oʻahu near the communities of Waipahu and Ewa, roughly 25-35 kilometres west of downtown Honolulu depending on route.

• Historic designation: Recognized by the U.S. government as a National Historic Site for its role as an internment and detention location during World War II.
• Remains and interpretation: Physical remains include earthworks and landscape footprints of incarceration facilities; interpretive material is provided to explain the site's wartime use.

What to See #

• Site core: Remnant camp landscape and interpretive areas preserved on site with limited public access and guided interpretation provided by the National Park Service and local partners.