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Honouliuli National Historic Site is the location of the largest and longest-run incarceration and internment site on the Hawaiian Islands during WWII. The camp itself was 160 acres, but the park service maintains and preserves 123 of those acres. It is located on the island of O‘ahu within the state of Hawai‘i, in the Pacific West Region of the National Park Service. The camp's location was at the bottom of a gulch in the Wai‘anae mountains where prisoners would be isolated from the outside world. Honouliuli stream runs through the center of the valley. The camp was bisected by a sugar plantation-era aqueduct, separating the 4,000 prisoners of war from the 400 American civilians held there. What is a "National Historic Site"?According to Designations of National Park Sytem Units, a National Historic Site is a site containing a single historical feature that was directly associated with its subject. Derived from the Historic Sites Act of 1935, a number of historic sites were established by secretaries of the Interior, but most have been authorized by acts of Congress.Honouliuli publications and park archives can be found below: Honouliuli Park Archives Honouliuli educational background flyers available below: Honouliuli Background Flyer (English) 
Historical Overview
Learn about the history behind the Honouliuli Internment Camp and other Hawaiian incarceration sites. 
Hawaii's Other Confinement Sites
Honouliuli was not the only internment camp in Hawai'i. Learn about the others here 
Commemorate 80 Years of Closure in 2026
2026 marks 80 years since Honouliuli Internment Camp closed. Commemorate this anniversary with us through events from June through September |
Last updated: May 29, 2026